| 子 | 孫 | |
Master Lassie   Master Mind x Queen Patsie |
Dawnshire Lana Heywood White Knight x Master Lassie |
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Heywood Duke  Heywood White Knight x Master Lassie |
Dense (usa) Heywood Duke x Debar |
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| Miss Lollypop Heywood Duke x Debar |
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| Ruff Heywood Duke x Bubbles I I I (can-usa) |
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| Heywood White Knight I I Heywood White Knight x Master Lassie |
Charles Lucky Lindbergh Heywood White Knight I I x Lady Manners |
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| Lady Pamela Heywood White Knight I I x Lady Manners |
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| Spirit Of Saint Louis Heywood White Knight I I x Lady Manners |
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| Tut Ankh Amen Heywood White Knight I I x Queen Mollie |
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| Joyzelle Heywood White Knight x Master Lassie |
Beatrix Castlewood Captain Doleful x Joyzelle |
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| Heights Beauty Captain Doleful x Joyzelle |
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| Selwyn Queen Captain Doleful x Joyzelle |
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| Tiny Taylor Captain Doleful x Joyzelle |
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| Knells Gypo Heywood White Knight x Master Lassie |
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| Pretty Mickey (usa 1928) Hulls Bellingham Joe x Master Lassie |
Bellingham Dutch Pretty Mickey (usa 1928) x Challenger Charm |
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| Lady Berrington Pretty Mickey (usa 1928) x Challenger Charm |
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| London Joe Pretty Mickey (usa 1928) x Queen Molly |
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| Maumee Boy Pretty Mickey (usa 1928) x Queen Molly |
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| Mitzie Ward Pretty Mickey (usa 1928) x Queen Molly |
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| Patricia Flanagan Pretty Mickey (usa 1928) x Queen Molly |
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| The Daring Stranger Jiggs Pretty Mickey (usa 1928) x Queen Molly |
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| Sir Brandy Heywood White Knight x Master Lassie |