“The Duxford ancestry of the Richardson and Wymans,”
| Author | John B. Threlfall |
| Publication information | New Eng. Hist. Gen. Reg. 139 (1985) page 147-148. |
| Author | John B. Threlfall |
| Publication information | New Eng. Hist. Gen. Reg. 139 (1985) page 147-148. |