The Mason WebWilliam Temple Thomson Mason
M, b. 12 December 1845, d. 5 April 1847
| Father | John Thomson Mason Jr. b. 9 May 1815, d. 28 Mar 1873 |
| Mother | Margaret Augusta Cowan b. 1821, d. 1899 |
William was born at Hagerstown, Md., on 12 December 1845. William died on 5 April 1847 at age 1.