Rollo
Rollo Matchem |  Colonel Stubbs | Captain (Romeo x Juliette) | Romeo (? x ?) |
| Juliette | |||
| Flirt (Shot x Lou) | Inconnu | ||
| Inconnu | |||
| Maud (Sam x Daisy) |  Sam (Captain x Nellie) | Captain (Romeo x Juliette) | |
 Nellie (Skip x Nanny) | |||
| Daisy (Captain x Old Flora) | Captain (Romeo x Juliette) | ||
| Old Flora | |||
 Dolly Obo (Obo II x Dolly W) | Obo II Site Web : http://www.asc-cockerspaniel.org/history/histoobo.asp | Farrow's Obo | Farrow's Fred |
 Farrow's Betty | |||
| Pitchers Chloe II | Bullock's Dash | ||
| Bullock's Nellie | |||
| Dolly W | Obo Jr | Farrow's Obo | |
| Farrow's Nellie | |||
| Beauty W | Obo II Site Web : http://www.asc-cockerspaniel.org/history/histoobo.asp | ||
| Lofty | |||