| Name | Happy McElwyn (S) |
| YoB | 1939 |
| Sex | horse |
| Colour | |
| Sire | Prince Hanover (US) or Culpepper (US) |
| Dam | Ima McElwyn (US), 1927 |
| Damsire | Mr McElwyn (US), 1921 |
| Breeder | |
| Birthplace |
| Happy McElwyn (S), 1939 | |||
| Ima McElwyn (US), 1927 | Mr McElwyn (US), 1921 | Guy Axworthy (US), 1902 | |
| Widow Maggie (US), 1907 | |||
| Trampoft (US), 1915 | Trampfast (US), 1905 | ||
| Voyager Queen (US), 1906 |
| Colour | Gender | Pedigree | Breeder | ||
|---|---|---|---|---|---|
| 1947 | Helene (S) | mare | Happy McElwyn (S), 1939 - Heddi (S), 1942 |