| Sons | Grand-sons | |
Sonoma Billy   Chester Cheesemaker x Sonoma Belle (uk) |
Hayfield Billy Sonoma Billy x Nettleham Queenie |
Derbyshire Queen (uk-can)   Hayfield Billy x Glossop Grip Hayfield Billy x Glossop Grip |
| Sons | Grand-sons | |
| Sonoma Billy Chester Cheesemaker x Sonoma Belle (uk) |
Hayfield Billy Sonoma Billy x Nettleham Queenie |
Derbyshire Queen (uk-can) Hayfield Billy x Glossop Grip Hayfield Billy x Glossop Grip |