Pedigree Certificate
Duffy's Jack
| Parents | Grandparents | Great-Grandparents | GG-Grandparents |
| mccarthy's blind pete | — | — | — |
| — | |||
| — | — | ||
| — | |||
| — | — | — | |
| — | |||
| — | — | ||
| — | |||
| duffy's nell | connor's tony | connor's black & Tan | — |
| — | |||
| conor's gyp | — | ||
| — | |||
| nagle's skip | quigg's boxer | — | |
| — | |||
| whalen nell bitch | — | ||
| — |