| Name | Main McElwyn (US) |
| YoB | 1927 |
| Sex | horse |
| Colour | bay |
| Sire | Mr McElwyn (US), 1921 |
| Dam | Ruth Mainsheet (US), 1915 |
| Damsire | Mainsheet (US), 1899 |
| Breeder | |
| Birthplace |
| Colour | Gender | Pedigree | Breeder | ||
|---|---|---|---|---|---|
| 1936 | Josedale Eagle (US) | bay | horse | Main McElwyn (US), 1927 - Ruth Mainsheet (US), 1915 | |
| 1936 | Main Express (US) | bay | horse | Main McElwyn (US), 1927 - Josedale Lucille (US), 1932 | O. A. Jose |