| Sons | Grand-sons | |
Ch Lady Byng Challenger    Irish Challenger (uk-can) x Lady Beatty (can) |
Beatty Challenger   Bronco Bill Challenger x Ch Lady Byng Challenger |
|
| Ben Challenger Bronco Bill Challenger x Ch Lady Byng Challenger |
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| Ginty Mackworth Mc Cullough Mackworth x Ch Lady Byng Challenger |
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| Peggy Challenger (can) White Knut (uk-can) x Ch Lady Byng Challenger |
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| Peggy O' Neill (can) Bronco Bill Challenger x Ch Lady Byng Challenger |