Diann P. Castle
Diann has been practicing family law for over 30 years. She started her own practice representing Legal Aid clients from marginalized communities, whose complex cases were often refused by other counsel. Diann now has over 100 reported decisions at all three levels of courts—the Provincial Court, the Court of Queen’s Bench, and the Court of Appeal. Diann believes that all matters should be mediated, negotiated, and counselled before proceeding to litigation.
Born in Oxbow, Saskatchewan and raised in the small ranching community of Cochrane, Alberta, Diann received her Juris Doctorate in 1987 from the University of Windsor. She articled with the firm of Meurin & Isbister and was called to the Bar in 1988 and formed her own firm in 1991, now known as Castle & Associates. Prior to law, she received a Diploma in Psychiatric Nursing in 1977 from Alberta Hospital Edmonton, a Diploma in Rehabilitation Counselling in 1978 from Red Deer College, and a Bachelor of Arts from the University of Calgary in 1983. She worked as a nurse at the Foothills Hospital from 1980 to 1994 while completing her undergraduate and Juris Doctor degrees. Diann’s background and education have taught her that every matter is unique, and all her clients are deserving of attention, care, and personalized strategies for success.
Diann has a passion for travel and has been fortunate to have travelled the world. In her travels to over 90 countries and territories, she has seen the Taj Mahal, the ancient ruins of Rome, the Great Wall, snorkeled the turquoise waters of the Caribbean, and enjoyed the best dishes across the Middle East. Diann's travels include, but not limited to: United States, Mexico, Panama, Costa Rica, Ecuador, El Salvador, Peru (Galapagos Islands), Belize, Honduras, Paraguay, Urquay, Argentina, Chile, Falkland Islands, Brazil, Barbados, Bahamas, Puerto Rico, Caracus, Antiqua, St. Lucia, Saba, Bermuda, St. Barts, St. Maartens, Turks & Calcos, Grande Cayman, Jamaica, Aruba, St. Vatican City, Luxemburg, England, Scotland, Wales, Ireland, France, Estonia, Poland, Finland, Russia, Iceland, Italy, Greece, Turkey, Belgium, Holland, Germany, Switzerland, Norway, Sweden, Denmark, Spain, Egypt, United Arab Emirates, India, Thailand, Malaysia, Vietnam, Hong Kong, Croatia, Israel, Syria, Lebanon, Morocco, Cuba, Gibraltar, Japan, Taiwan and Jordan.
What she appreciates most about these experiences is the life-long friendships she has developed with people from different cultures. Every encounter has enlightened and enriched her understanding of the world and has strengthened her ability to empathize with a broad range of people.
See Diann's travels on the map below:
DS v PA, 2018 ABPC 157

AH v AM, 2018 ABPC 92

JF v. JK, 2017 ABPC 27

V.N. v. P.S. (P.B.), 2014 ABPC 86

V.N. v. P.S. (P.B.), 2014 ABPC 217

H. (C.L.) v. C. (S.A.) 2010 CarswellAlta 541, 2010 ABPC 98, [2010] A.W.L.D. 3007, [2010] A.W.L.D. 3016, [2010] A.W.L.D. 3018, [2010] W.D.F.L. 3097, [2010] W.D.F.L. 3152, [2010] W.D.F.L. 3154;

B. (T.) v. B. (J.) 2009 CarswellAlta 1196, 2009 ABPC 209, [2009] A.W.L.D. 4274, [2009] W.D.F.L. 5226;

M. (S.) v. Alberta (Director, Child, Youth & Family Enhancement Act) 2008 CarswellAlta 510, 2008 ABPC 101, [2008] A.W.L.D. 3956, [2008] W.D.F.L. 4666;

M. (F.), Re In the Matter of the Child, Youth & Family Enhancement Act, R.S.A. (2000) Chapter C-12 and In the Matter of the Family Law Act, Statutes of Alberta, 2003 Chap. F-4.5 and F.M. born 2004 and D.M. born 2005 2007 CarswellAlta 1177, 2007 ABPC 186, [2008] A.W.L.D. 2033, [2008] W.D.F.L. 2495;

M. (F.), Re In the Matter of the Child, Youth & Family Enhancement Act, R.S.A. (2000) Chapter C-12 and In the Matter of the Family Law Act, Statutes of Alberta, 2003 Chap. F-4.5 and F.M. born 2004 and D.M. born 2005 2007 CarswellAlta 213, 2007 ABPC 44, [2007] A.W.L.D. 2117, [2007] W.D.F.L. 2358;

M. (J.R.) v. M. (T.D.) 2006 CarswellAlta 1443, 2006 ABPC 285, [2007] A.W.L.D. 1621, [2007] A.W.L.D. 1620, [2007] A.W.L.D. 1622, [2007] W.D.F.L. 1780, [2007] W.D.F.L. 1778, [2007] W.D.F.L. 1781;

W.(M.), Re In the Matter of The Child, Youth and Family Enhancement Act, R.S.A. (2000) 2006 CarswellAlta 1058, 2006 ABPC 217, [2007] A.W.L.D. 107, [2007] W.D.F.L. 129;

A.(S.L.), Re In the Matter of The Child, Youth and Family Enhancement Act, R.S.A. (2000) 2005 CarswellAlta 1716, 2005 ABPC 141, [2006] A.W.L.D. 405, [2006] A.W.L.D. 406, [2006] W.D.F.L. 277, [2006] W.D.F.L. 279;

Alberta (Director of Child Welfare) v. H.(C.) 2003 CarswellAlta 8, 2003 ABPC 3, 8 Alta. L.R. (4th) 268;

Alberta (Director of Child Welfare) v. S.(S.) 2002 CarswellAlta 1517, 2002 ABPC 184;

S.(B.A.) v. Z.(C.L.) 2001 CarswellAlta 379, 2001 ABPC 55, 287 A.R. 1;

T.(J.), Re In the Matter of: The Child Welfare Act, S.A., C-8.1, as amended; and The Provincial Court Act, S.A., P-20, as amended 2001 CarswellAlta 80, 2001 ABPC 27, 283 A.R. 169; and

L.(T.A.V.), Re In the Matter of L.(T.A.V.) and L.(T.A.), Children Within The Meaning of the Child Welfare Act 1993 CarswellAlta 836, 147 A.R. 69.

Wright v Lemoine, 2017 ABQB 395

ESB v SDB, 2017 ABQB 522 (CanLII)

Noseworthy v McDonald, 2017 ABQB 439 (CanLII)

EG v. Alberta (Child and Family Services), 2014 ABQB 406

W. (L.D.) v. M. (K.D.) 2011 CarswellAlta 1032, 2011 ABQB 384, [2011] A.W.L.D. 3905, [2011] A.W.L.D. 3904, [2011] A.W.L.D. 3902, [2011] A.W.L.D. 3899, [2011] A.W.L.D. 3894, [2011] A.W.L.D. 3893, [2011] A.W.L.D. 3891, [2011] W.D.F.L. 5145, [2011] W.D.F.L. 5139, [2011] W.D.F.L. 5128, [2011] W.D.F.L. 5117, [2011] W.D.F.L. 5081, [2011] W.D.F.L. 5077, [2011] W.D.F.L. 5064, 508 A.R. 335;

S. (C.) v. L. (E.) 2010 CarswellAlta 831, 2010 ABQB 285;

C. (L.) v. L. (S.) 2010 CarswellAlta 275, 2010 ABQB 92, [2010] A.W.L.D. 2589, [2010] A.W.L.D. 2591, [2010] W.D.F.L. 2645, [2010] W.D.F.L. 2654;

Bowles v. Beamish 2008 CarswellAlta 1067, 2008 ABQB 480, [2009] A.W.L.D. 160;

Bowles v. Beamish 2008 CarswellAlta 888, 2008 ABQB 395, [2008] A.W.L.D. 3307, [2008] A.W.L.D. 3266, [2008] W.D.F.L. 4010, [2008] W.D.F.L. 3987;

Fisher v. Fisher 2008 CarswellAlta 340, 2008 ABQB 170, [2008] A.W.L.D. 2039, [2008] A.W.L.D. 2041, [2008] A.W.L.D. 2036, [2008] W.D.F.L. 2525, [2008] W.D.F.L. 2536, [2008] W.D.F.L. 2550, 52 R.F.L. (6th) 435, 442 A.R. 304;

Mahowich v. Mahowich 2008 CarswellAlta 319, 2008 ABQB 143, [2008] A.W.L.D. 1581, [2008] W.D.F.L. 2042;

F. (A.), Re T.W. and R.W. and Child and Family Services Authority, Anne Marie Kingston 2008 CarswellAlta 458, 2008 ABQB 97, [2008] A.W.L.D. 3444, [2008] A.W.L.D. 3445, [2008] A.W.L.D. 3447, [2008] W.D.F.L. 4115, [2008] W.D.F.L. 4109, [2008] W.D.F.L. 4110;

M. (F.), Re The Director of Child and Family Services In Right of the Province of Alberta and S.D.M. 2008 CarswellAlta 457, 2008 ABQB 94, [2008] A.W.L.D. 2366, [2008] W.D.F.L. 2912, 53 R.F.L. (6th) 342, 444 A.R. 18;

Bowles v. Beamish 2007 CarswellAlta 797, 2007 ABQB 398, [2007] A.W.L.D. 2564;

Bowles v. Beamish 2007 CarswellAlta 1473, 2007 ABQB 398, [2008] A.W.L.D. 2234, [2008] A.W.L.D. 2234, [2008] A.W.L.D. 2233;

W. (V.L.) v. W. (J.E.) 2007 CarswellAlta 674, 2007 ABQB 358, 75 Alta. L.R. (4th) 252, 39 R.F.L. (6th) 376, [2007] A.W.L.D. 2952, [2007] A.W.L.D. 2954, [2007] W.D.F.L. 3438, [2007] W.D.F.L. 3451, 158 A.C.W.S. (3d) 439;

Ganden, Re: In the Matter of the Bankruptcy of Mark Edward Ganden 2006 CarswellAlta 1449, 2006 ABQB 806, [2007] A.W.L.D. 8, [2007] A.W.L.D. 10, [2007] W.D.F.L. 1, 26 C.B.R. (5th) 194, 153 A.C.W.S. (3d) 26, 428 A.R. 287;

W.(K.) v. Alberta (Director of Child Welfare) 2006 CarswellAlta 1401, 2006 ABQB 778, [2007] A.W.L.D. 709, [2007] W.D.F.L. 822, 34 R.F.L. (6th) 414, 70 Alta. L.R. (4th) 81;

G.(A.) v. S.(L.) 2005 CarswellAlta 968, 2005 ABQB 462, [2005] W.D.F.L. 3432, [2005] W.D.F.L. 3472, [2005] W.D.F.L. 3476, [2005] A.W.L.D. 2781, [2005] A.W.L.D. 2804, [2005] A.W.L.D. 2807, [2005] W.D.F.L. 3910, [2005] A.W.L.D. 3172, 17 R.F.L. (6th) 244;

Barrett Estate, Re: In the Matter of the Estate of Dwight Wesley Barrett 2005 CarswellAlta 2334, 2005 WL 5745752 (Alta. Q.B.);

Nathoo v. Nathoo 2005 CarswellAlta 301, 2005 ABQB 175, [2005] A.W.L.D. 1377, [2005] A.W.L.D. 1378, [2005] A.W.L.D. 1380, [2005] W.D.F.L. 1713, [2005] W.D.F.L. 1708, [2005] W.D.F.L. 1707, 16 R.F.L. (6th) 313;

J. (R.K.) v. S. (M.M.) 2004 CarswellAlta 1148, 2004 ABQB 641;

Alberta (Director of Child Welfare) v. R.(M.) 2003 CarswellAlta 2020, 2005 ABQB 641, [2005] W.D.F.L. 3946, [2005] A.W.L.D. 3245, 386 A.R. 182;

W.(J.) v. C.(J.) 2003 CarswellAlta 1767, 2003 ABQB 211;

Ganden v. Kovalsky 2003 CarswellAlta 891, 2003 ABQB 20;

S.(J.S.) v. S.(W.J.) 2002 CarswellAlta 2104, 2002 ABQB 819;

Thurber v. Thurber 2002 CarswellAlta 950, 2002 ABQB 727, 322 A.R. 242;

M.(D.A.) v. M.(A.E.) 2002 CarswellAlta 1501, 2002 ABQB 538;

R.(W.) v. Alberta (Director of Child Welfare) 2001 CarswellAlta 1771, 2001 ABQB 869, 25 R.F.L. (5th) 380;

Tabata v. Smith 2001 CarswellAlta 1294, 2001 ABQB 776, 21 R.F.L. (5th) 451, 297 A.R. 168;

Lauderdale v. Lauderdale 1999 CarswellAlta 296, 241 A.R. 355, 50 R.F.L. (4th) 411;

Johnson-Steeves v. Lee 1997 CarswellAlta 426, 50 Alta. L.R. (3d) 340, [1997] 6 W.W.R. 608, 29 R.F.L. (4th) 126, 203 A.R. 192, 6 W.W.R. 608;

Cyclone Sales & Service Ltd. Husson 1996 CarswellAlta 878, 195 A.R. 380 at 385, [1996] A.W.L.D. 1090, [1996] W.D.F.L. 2742;

Taylor v. Rossu 1996 CarswellAlta 847, 44 Alta.L.R. (3d) 388, [1997] 1 W.W.R. 672, 140 D.L.R. (4th) 562, 191 A.R. 252, 39 C.R.R. (2d) 362 - (LANDMARK);

Cyclone Sales & Service Ltd. v. Husson 1996 CarswellAlta 877, 195 A.R. 380, [1996] A.W.L.D. 1091, [1996] W.D.F.L. 2741;

Nowakowski v. Nowakowski 1996 CarswellAlta 63, 20 R.F.L. (4th) 281, 177 A.R. 370;

Lauderdale v. Lauderdale 1996 CarswellAlta 43, 21 R.F.L. (4th) 17, 180 A.R. 81;

O.(T.L.) v. Alberta (Director of Child Welfare) 1995 CarswellAlta 431, 34 Alta. L.R. (3d) 194, 175 A.R. 194;

Paterson v. Paterson 1994 CarswellAlta 786, [1994] A.W.L.D. 989, [1994] W.D.F.L. 1791;

McIntyre v. McIntyre 1993 CarswellAlta 769, [1993] W.D.F.L. 1101.

JWS v CJS, 2021 ABQB 411

CMZ v JLZ, 2021 ABQB 700

Lotoski v. Lotoski, 2016 ABCA 73

Brost v Kusler, 2016 ABCA 363

Quraishi v Merah, 2016 ABCA 116

E.G. v. Alberta (Child, Youth and Family Enhancement Act, Director), 2014 ABCA 237

Caldwell v. Caldwell, 2013 ABCA 268

Gingrich v. Gingrich 2012 CarswellAlta 2073, 2012 ABCA 371;

Kretschmer v. Terrigno 2012 CarswellAlta 2064, 2012 ABCA 345;

H. (R.) v. H. (G.G.) 2011 CarswellAlta 2428, 2012 ABCA 11, [2012] A.W.L.D. 704, [2012] W.D.F.L. 1344, 215 A.C.W.S. (3d) 894;

M. (J.D.) v. L. (A.M.) 2010 CarswellAlta 1378, 2010 ABCA 219;

Hojnik v. Hojnik 2010 CarswellAlta 1061, 2010 ABCA 192, [2010] A.W.L.D. 3013, [2010] A.W.L.D. 3014, [2010] A.W.L.D. 3025, [2010] W.D.F.L. 3142, [2010] W.D.F.L. 3144, [2010] W.D.F.L. 3180;

D. (A.) v. Alberta (Director of Child Welfare) 2010 CarswellAlta 438, 2010 ABCA 83, [2010] A.W.L.D. 1614, [2010] W.D.F.L. 1647, 78 R.F.L. (6th) 13, 317 D.L.R. (4th) 299;

J. (D.) v. J. (M.) 2009 CarswellAlta 1238, 2009 ABCA 272, [2009] A.W.L.D. 3450, [2009] A.W.L.D. 3451, [2009] A.W.L.D. 3452, [2009] W.D.F.L. 4093, [2009] W.D.F.L. 4098, [2009] W.D.F.L. 4124, 70 R.F.L. (6th) 63, 13 Alta. L.R. (5th) 1, 464 A.R. 16, 467 W.A.C. 16;

Hashman v. Hashman 2009 CarswellAlta 341, 2009 ABCA 95, [2009] A.W.L.D. 1295, [2009] W.D.F.L. 1502;

F. (A.), Re 2009 CarswellAlta 33, 2009 ABCA 25, 99 Alta. L.R. (4th) 28, [2009] A.W.L.D. 548, [2009] A.W.L.D. 549, [2009] A.W.L.D. 547, [2009] W.D.F.L. 604, [2009] W.D.F.L. 605, [2009] W.D.F.L. 607, 61 R.F.L. (6th) 64, 446 A.R. 333, 442 W.A.C. 333, 307 D.L.R. (4th) 140;

Alberta (Director, Child, Youth & Family Enhancement Act) v. S. (L.) 2009 CarswellAlta 12, 2009 ABCA 10, [2009][ A.W.L.D. 768, [2009] A.W.L.D. 710, [2009] W.D.F.L. 831, 446 A.R. 135, 442 W.A.C. 135;

Hykawy v. Hykawy 2008 CarswellAlta 1294, 2008 ABCA 324, [2008] A.W.L.D. 3959, [2008] W.D.F.L. 4718, 56 R.F.L. (6th) 24, 60 C.P.C. (6th) 216, 298 D.L.R. (4th) 620;

Felker v. Felker 2007 CarswellAlta 164, 2007 ABCA 55, 391 W.A.C. 318, 401 A.R. 318, [2007] A.W.L.D. 1863, [2007];

W. (K.V.) v. Alberta (Director of Child Welfare), 2006 CarswellAlta 1773, 2006 ABCA 404, [2007] 3 W.W.R. 626, [2007] A.W.L.D. 1131, [2007] W.D.F.L. 1289, 69 Alta. L.R. (4th) 215, 391 W.A.C. 175, 401 A.R. 175;

Keshavjee v. Altavac Manufacturing Inc. 2006 CarswellAlta 1807, 20070 ABCA 2, [2007] W.D.F.L. 1938, [2007] A.W.L.D. 1769;

G.(A.) v. S.(L.) 2006 CarswellAlta 1367, 2006 ABCA 311, 384 W.A.C. 296, 397 A.R. 296, [2007] W.D.F.L. 921, [2007] W.D.F.L. 999, [2007] W.D.F.L. 984, [2007] A.W.L.D. 779, [2007] A.W.L.D. 808, [2007] A.W.L.D. 807, 275 D.L.R. (4th) 388, 34 R.F.L. (6th) 266;

P.(V.M.) v. P.(D.B.) 2006 CarswellAlta 1228, 2006 ABCA 286, [2006] A.W.L.D. 2955, [2006] W.D.F.L. 3552, 384 W.A.C. 385, 397 A.R. 385, 36 R.F.L. (6th) 259, [2007] A.S.L.D. 2119, [2007} W.D.F.L. 2372;

P.(V.M.) v. P.(D.B.) 2006 CarswellAlta 893, 2006 ABCA 224, [2006] A.W.L.D. 2463, [2006] W.D.F.L. 2885, 28 R.F.L. (6th) 5, 152 A.C.W.S. (3d) 194;

Darr v. Darr 2006 CarswellAlta 99, 2006 ABCA 32, [2006] A.W.L.D. 1037, [2006] A.W.L.D. 1037, [2006] A.W.L.D. 1058, [2006] A.W.L.D. 987, [2006] W.D.F.L. 932, 263 D.L.R. (4th) 410, 384 A.R. 69, 367 W.A.C. 69;

T.(M.) v. Alberta (Director of Child Welfare) 2005 CarswellAlta 362, 2005 ABCA 125, [2005] A.W.L.D. 1611, [2005] A.W.L.D. 1612, [2005] A.W.L.D. 1613, {2005} A.W.L.D. 1614, [2005] A.W.L.D. 1615, [2005] W.D.F.L. 1902, [2005] W.D.F.L. 1896, [2005] W.D.F.L. 1895, [2005] W.D.F.L. 1894, [2005] W.D.F.L. 1891, 363 A.R. 306, 343 W.A.C. 306, 42 Alta. L.R. (4th) 99;

M.(L.) v. T.(J.) 2004 CarswellAlta 1883, 2005 ABCA 9, [2005] W.D.F.L. 1252, [2005] A.W.L.D. 1051;

White v. White 2003 CarswellAlta 1732, 2003 ABCA 358, 1 R.F.L. (6th) 416, 346 A.R. 51, 320 W.A.C. 51;

W.(J.) v. C.(J.) 2003 CarswellAlta 1769, 2003 ABCA 348, 26 Alta. L.R. (4th) 19, 236 A.R. 127, 320 W.A.C. 128, 49 R.F.L. (5th) 450;

D.(J.) v. B.(T.D.) 2002 CarswellAlta 1568, 2002 ABCA 269, 33 R.F.L. (5th) 315, 317 A.R. 231, 284 W.A.C. 231;

Bulloch v. Bulloch 2001 CarswellAlta 1882, 2001 ABCA 69;

Deiure v. Deiure 2000 CarswellAlta 1497, 2000 ABCA 328, 11 R.F.L. (5th) 295, 281 A.R. 146, 248 W.A.C. 146;

Howard v. Howard 2000 CarswellAlta 466, 2000 WL 33296250 (Alta. C.A.);

Furlong v. Furlong 1998 CarswellAlta 962, 42 R.F.L. (4th) 350, [1998] A.J. No. 1173;

Taylor v. Rossu 1998 CarswellAlta 523, 161 D.L.R. (4th) 266, 216 A.R. 348, 175 W.A.C. 348, 39 R.F.L. (4th) 242, [1999] 1 W.W.R. 85, (sub nom. Rossue v. Taylor) 53 C.R.R. (2d) 219, 68 Alta. L.R. (3d) 213, 1 W.W.R. 85, [1998] A.J. No. 648, 1998 ABCA 193 - (LANDMARK) Changed the Law of Alberta Re: Spousal Support for Common-Law Spouses;

Bolt v. Nunemaker 1998 CarswellAlta 448, 216 A.R. 28, 175 W.A.C. 28;

Johnson-Steeves v. Lee 1997 CarswellAlta 961, 54 Alta. L.R. (3d) 218, 33 R.F.L. (4th) 278, 48 C.R.R. (2d) 327, 209 A.R. 292, 160 W.A.C. 292, [1998] 3 W.W.R. 419, 3 W.W.R. 410, [1997] A.J. No. 1057;

Lauderdale v. Lauderdale 1997 CarswellAlta 448, 200 A.R. 198, 146 W.A.C. 198, 29 R.F.L. (4th) 34;

Mayotte v. Salthouse 1997 CarswellAlta 445, 29 R.F.L. (4th) 38;

M.(R.K.) v. K.(L.D.) 1996 CarswellAlta 941, 25 R.F.L. (4th) 285, 193 A.R. 167, 135 W.A.C. 167, [1997] A.W.L.D. 033, [1997] W.D.F.L. 075;

Lasalle v. Lasalle 1994 CarswellAlta 387, 7 R.F.L. (4th) 100;

Haisman v. Haisman 1994 CarswellAlta 179, 22 Alta. L.R. (3d) 56, 7 R.F.L. (4th) 1, 116 D.L.R. (4th) 671, 157 A.R. 47, 77 W.A.C. 47, 116 D.L.R. (4th) 671 - (LANDMARK);

Theriault v. Theriault 1994 CarswellAlta 371, 2 R.F.L. (4th) 157, 149 A.R. 210, 63 W.A.C. 210, 113 D.L.R. (4th) 57 - (LANDMARK) followed by SCC; and

Freeman v. Pellerin 1991 CarswellAlta 767, 120 A.R. 335, 8 W.A.C. 335.

JLZ v CMZ, 2021 ABCA 200

Areas of Practice
- Family Law
- Family Law Litigation
- Family Law Appeals
Bar Admissions
- Alberta, 1988
Education
- University of Windsor School of Law, Windsor, Ontario, Canada
J.D. - 1987 - University of Calgary, Calgary, Alberta, Canada
B.A. - 1983 - Red Deer College, Red Deer, Alberta, Canada
Diploma in Rehabilitation Counselling - 1978 - Alberta Hospital Edmonton, Edmonton, Alberta, Canada
Diploma in Psychiatric Nursing - 1977
Honors and Awards
- Law School Entrance Scholarship, 1983 - 1984
Professional Associations and Memberships
- Calgary Bar Association, 1988 - Present
- Alberta Law Society, 1988 - Present
- Canadian Bar Association