| Ejemplar | Hijos | Nietos |
Rodney Lass (can)   Toronto Lad (uk-can) x Rodney Queen (can) |
Auburncrest Cobby Girl  Hefty Monarch (uk-can) x Rodney Lass (can) |
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| Auburncrest Delicto Hefty Monarch (uk-can) x Rodney Lass (can) |
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| Auburncrest Flossie Hefty Monarch (uk-can) x Rodney Lass (can) |
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| Auburncrest Tessie Hefty Monarch (uk-can) x Rodney Lass (can) |
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| Baldwin Hefty Biddy Hefty Monarch (uk-can) x Rodney Lass (can) |
Weldon Tulsa Sal Ospringe St Louis (uk-can) x Baldwin Hefty Biddy |
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Baldwin Hefty Commodore Of Baumbrae  Hefty Monarch (uk-can) x Rodney Lass (can) |
Baldwin Baroness Baldwin Hefty Commodore Of Baumbrae x Streetsville Lassie |
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| Baldwin Princess Jane Baldwin Hefty Commodore Of Baumbrae x Streetsville Lassie |
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| Baumbrae Hefty Peggy Baldwin Hefty Commodore Of Baumbrae x Bonbrae Naturich |
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| Baumbrae Mickeydoo L Baldwin Hefty Commodore Of Baumbrae x Bonbrae Naturich |
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Sir Resolute  Baldwin Hefty Commodore Of Baumbrae x Streetsville Lassie |
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| Baldwin Hefty Lassie Hefty Monarch (uk-can) x Rodney Lass (can) |
Laughing Laddie Russell Sir Marvel x Baldwin Hefty Lassie |
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| Baldwin Hefty Peggy Hefty Monarch (uk-can) x Rodney Lass (can) |
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| Baldwin Lady Betty Hefty Monarch (uk-can) x Rodney Lass (can) |
Jiggs (usa 1926 Schwarz) Crusader (uk-usa 1923) x Baldwin Lady Betty |
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| Lone Eagle Crusader (uk-usa 1923) x Baldwin Lady Betty |
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Fred Challenger  Hefty Monarch (uk-can) x Rodney Lass (can) |
Alaunt Beauty Fred Challenger x Lady Molly I I I (can) |
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| Alaunt Lassie Fred Challenger x Lady Molly I I I (can) |
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| Alaunt Missie Fred Challenger x Lady Molly I I I (can) |
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| Ayrshire Brindle Fred Challenger x Baldwin Princess Sally |
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| Ayrshire Dan Fred Challenger x Baldwin Princess Sally |
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| Ayrshire Laddie Fred Challenger x Baldwin Princess Sally |
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| Beach Lassie Fred Challenger x Ashton Sparkler |
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| Challenge Blaze Fred Challenger x White Blaze (can) |
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| Dempsey Lad (can) Fred Challenger x Glen Elizabeth |
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Don Crest Hefty Bob  Fred Challenger x Bob Don Ocean Maid |
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| Ebony Girl Fred Challenger x Glen Elizabeth |
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| Ethelbert Girl Fred Challenger x Bob Don Ocean Maid |
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| Glenarden Brigadier Fred Challenger x White Blaze (can) |
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| Glenarden Rufus Fred Challenger x White Blaze (can) |
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| Glenhodsons Monarch Fred Challenger x Glen Elizabeth |
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| Gold Crest Fred Challenger x Glen Elizabeth |
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| Golden Girl (can 1926) Fred Challenger x Glen Elizabeth |
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| Green Beck Fred Challenger x Bob Don Ocean Maid |
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| Hefty Radio Fred Challenger x Lady Beck |
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| John (can 1926) Fred Challenger x Glen Margaret |
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| Kaslo Colonel Bogie Fred Challenger x Kaslo Betsy Trotwood |
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| Kaslo Commodore Fred Challenger x Kaslo Betsy Trotwood |
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Ch Kaslo Esmeralda  Fred Challenger x Kaslo Betsy Trotwood |
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| Kaslo John Bull Fred Challenger x Kaslo Betsy Trotwood |
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| Kaslo Marquis Fred Challenger x Kaslo Betsy Trotwood |
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| Lady Fearless (can-usa) Fred Challenger x Bob Don Ocean Maid |
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| Lady Jane I V (can) Fred Challenger x Lady Nancy (can 1923) |
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| Lady Topsy Fred Challenger x Glen Margaret |
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| Lassie I I (can) Fred Challenger x Glen Margaret |
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| Leister Boy (can 59468) Fred Challenger x Glen Margaret |
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| Lucky Donna Fred Challenger x Queenie I I (can 40772) |
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| Nales Challenge Fred Challenger x Glen Elizabeth |
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| Oshawa Major Fred Challenger x Oshawa Belle |
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| Pretty Polly (can 1925) Fred Challenger x White Blaze (can) |
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| Princess Bessie (can) Fred Challenger x Princess Georgina (can) |
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| Princess Betty (can-usa 1925) Fred Challenger x Princess Georgina (can) |
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| Princess Marie (can) Fred Challenger x Princess Georgina (can) |
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| Princess Peggy (can 1925) Fred Challenger x Baldwin Princess Sally |
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| Princess Tessie Fred Challenger x Princess Georgina (can) |
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| Queen Beth (can) Fred Challenger x Glen Elizabeth |
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| Roxton Challenger (can 59469) Fred Challenger x Glen Margaret |
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| Salvador (can) Fred Challenger x Glen Margaret |
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| Salzer Laddie Fred Challenger x Bob Don Ocean Maid |
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| Strathcona Buddy Fred Challenger x Lady Nancy (can 1923) |
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| Strathcona Pal Fred Challenger x Queenie I I (can 40772) |
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| Tillie Toiler Fred Challenger x Glen Elizabeth |
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| Touro Freckles Fred Challenger x Ashton Sparkler |
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| Truro Lad Fred Challenger x Glen Elizabeth |
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| Westdorf Hefty Bess Fred Challenger x Princess Mary Rexzenia |
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| Widman Hope Fred Challenger x Queenie I I (can 40772) |
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| Widman Nip Fred Challenger x Queenie I I (can 40772) |
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| Wonder Boy (can) Fred Challenger x Bob Don Ocean Maid |
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| Hefty Defender Hefty Monarch (uk-can) x Rodney Lass (can) |
Beauty Beresford Hefty Defender x Lady Betty Beresford |
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| Derbyshire Beauty Hefty Defender x Derbyshire Queen (uk-can) |
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| Dominion Fearless Hefty Defender x Streetsville Betty |
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| Garry Beresford Hefty Defender x Lady Betty Beresford |
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| Glenarden Betsy Trottwood Hefty Defender x Streetsville Beauty |
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| Glenarden Billy Hefty Defender x Streetsville Betty |
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| Glenarden Dream Maid Hefty Defender x Streetsville Betty |
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| Glenarden Iron Duke Hefty Defender x Streetsville Beauty |
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| Glenarden King Hefty Defender x Streetsville Beauty |
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| Glenarden Lady Brilliant Hefty Defender x Streetsville Beauty |
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| Glenarden Lady Joan Hefty Defender x Streetsville Beauty |
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| Glenarden Likely Lady Hefty Defender x Streetsville Betty |
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| Glenarden Lorraine Hefty Defender x Streetsville Betty |
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| Glenarden Maid Marion Hefty Defender x Streetsville Beauty |
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| Glenarden Ringleader Hefty Defender x Streetsville Beauty |
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| Glenarden Viceroy Hefty Defender x Streetsville Beauty |
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| Glenarden White Count Hefty Defender x Streetsville Beauty |
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| Hefty Nuisance Hefty Defender x Princess Bessie (can) |
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| Lady Supreme (can) Hefty Defender x Lady Betty Beresford |
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| Pig Skin Peter Hefty Defender x Princess Bessie (can) |
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| Princess Molly Hefty Defender x Princess Bessie (can) |
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| Princess Victory Hefty Defender x Princess Bessie (can) |
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| Regal Prince Hefty Defender x Princess Bessie (can) |
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| Scotia Lassie Hefty Defender x Queen Georgina Anne |
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| Sensible King Hefty Defender x Princess Bessie (can) |
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| Streetsville Defender Hefty Defender x Streetsville Pride |
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| Streetsville Girl Hefty Defender x Streetsville Lady |
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| Toronto Lady Hefty Defender x Streetsville Pride |
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| Tunney (can 1927) Hefty Defender x Streetsville Pride |
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| Hefty Folly Hefty Monarch (uk-can) x Rodney Lass (can) |
Folly Rinkles St Blaise (can-usa) x Hefty Folly |
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| Hefty Lad Hefty Monarch (uk-can) x Rodney Lass (can) |
Culley Boy Hefty Lad x Ashton Sparkler |
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| Hoflich Hefty Hefty Monarch (uk-can) x Rodney Lass (can) |
Hoflich Little Prince Hoflich Hefty x Cropstone Queenie |
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| Hoflich Stub Hoflich Hefty x Cropstone Queenie |
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| Lady Lorraine Hefty Monarch (uk-can) x Rodney Lass (can) |
Alunt Lady Dauntless Dan Beach Park x Lady Lorraine |
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| Angelica Of Blue Stone Ch Beach Park Dominator Baldwin (can-usa) x Lady Lorraine |
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| Baumbrae Hefty Duchess King Plate x Lady Lorraine |
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| Dauntless Prince Dauntless Dan Beach Park x Lady Lorraine |
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| Glenarden Lady Morna Regalaunt (uk-can) x Lady Lorraine |
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| Lady Tess Dauntless Dan Beach Park x Lady Lorraine |
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| Lottie R (can) Regalaunt (uk-can) x Lady Lorraine |
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| Miss Civility Regalaunt (uk-can) x Lady Lorraine |
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| Princess Hefty Burnbrae King Plate x Lady Lorraine |
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| Sensible Dannie Dauntless Dan Beach Park x Lady Lorraine |
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| Melbourne Spark Plug (can) Hefty Monarch (uk-can) x Rodney Lass (can) |
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| Repton Prince Hefty Monarch (uk-can) x Rodney Lass (can) |