Deer Park Rex
Deer Park Rex Black Graf | Obo II Website : 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 | |||
| Critic (Watermark x Blackie II) | Watermark (Brush II) | Boulton's Brush | |
| Boulton's Rhea | |||
| Blackie II (Beau x Blackie) | Easten's Beau | ||
| Easten's Blackie | |||
| Miss Brant | Brant (Sir Obo) | Obo II Website : http://www.asc-cockerspaniel.org/history/histoobo.asp | Farrow's Obo |
| Pitchers Chloe II | |||
| Blackie III (Watermark x Blackie II) | Watermark (Brush II) | ||
| Blackie II (Beau x Blackie) | |||
| Barclay's Daisy | Obo Jr | Farrow's Obo | |
| Farrow's Nellie | |||
| Ruby (Sport x Fleet) | Sport (Jet x Daisy) | ||
| Fleet (? x ?) | |||