| Lady Tivio Blackburn Brown 2004 4588467 | Mr Blackburn Champ Dun 1986 2495098 | Mr Blackburn 41 Dun 1963 0246868 | Pretty Buck Brown 1942 0002103 | Pretty Boy Brown 1928 0002229 |
| Mare by Buck Thomas Unknown Unknown U0074608 | ||||
| Lady Cowan 6 Bay 1950 0072255 | Blackburn Dun 1927 0002228 | |||
| Cowan Mare Unknown Unknown U0069865 | ||||
| Sheilcut Bay 1966 0411987 | Poco Champ Bay 1950 0030808 | Poco Bueno Brown 1944 0003044 | ||
| Sheilwin Dun 1943 0010483 | ||||
| Holly Janie Unknown Unknown 0164284 | Unknown Sire | |||
| Unknown Mare | ||||
| De Tivio Girl Unknown Unknown 3875483 | Lenata Doc Bay 1982 1889482 | Rey De Peppy Sorrel 1979 1494691 | Mr San Peppy Sorrel 1968 0548845 | |
| Tres Reinas Rojas Chestnut 1975 1097079 | ||||
| Poco Lenata Buckskin 1976 1189277 | Unknown Sire | |||
| Unknown Mare | ||||
| Tom Thumbs Miss Unknown Unknown 1768231 | Doc's Tom Thumb Bay 1972 0826130 | Doc Bar Chestnut 1956 0076136 | ||
| Jameen Tivio Bay 1956 0060482 | ||||
| Swen Miss 113 Unknown Unknown 0308413 | Unknown Sire | |||
| Unknown Mare |