| Ejemplar | Hijos | Nietos |
Bronco Bill 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 |
||
| Mc Cullough Mackworth Bronco Bill Challenger x Nova Mackworth |
Ginty Mackworth Mc Cullough Mackworth x Ch Lady Byng Challenger |
|
Peggy O' Neill (can)  Bronco Bill Challenger x Ch Lady Byng Challenger |