Pedigree Certificate
COLBY'S JACK
| Parents | Grandparents | Great-Grandparents | GG-Grandparents |
| GR CH DUFFY'S JACK (6XW) | MCCARTHY'S BLIND PETE | — | — |
| — | |||
| — | — | ||
| — | |||
| DUFFY'S NELL | CONNOR'S TONY | CONNOR'S BLACK AND TAN | |
| CONNOR'S GYP | |||
| NAGLE'S SKIP | QUIGG'S BOXER (2XW) | ||
| WHALEN NELL BITCH | |||
| DUFFY HANNAH | GR CH DUFFY'S JACK (6XW) | MCCARTHY'S BLIND PETE | — |
| — | |||
| DUFFY'S NELL | CONNOR'S TONY | ||
| NAGLE'S SKIP | |||
| KENNEDY'S BLAZE | — | — | |
| — | |||
| — | — | ||
| — |