William Penn First (US)
| Year of Birth | 1890 |
| Sex | horse |
| Colour | ? |
| Sire | Santa Claus (US), 1874 |
| Dam | Lulu M. (US), 1885 |
| Damsire | Dauntless (US), 1867 |
| Breeder | |
| Birthplace |
Pedigree
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William Penn First
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Foals
| YoB | Name | Colour | Sex | Pedigree | Breeder | Birthplace |
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| 1894 | Joseph Foster (US) | dark bay | horse | William Penn First (US) - Pastime (US) | William D. Althouse | |
| 1899 | A. Penn (US) | bay | horse | William Penn First (US) - E.C.A. (US) | W. D. Althouse |