Mary Sarah Sargent was born 2 June 1844 in Boston, Suffolk County, Massachusetts, United States to Howard Sargent (1810-1869) and Charlotte Cunningham (1818-1888) and died 4 March 1908 Milton, Norfolk County, Massachusetts, United States of unspecified causes. She married Arthur Malcolm Thomas (1844-1879) 14 June 1864 in Boston, Suffolk County, Massachusetts, United States. She married John Vaughan Apthorp (1844-1939) 21 September 1882 in Cambridge, Middlesex County, Massachusetts, United States.
Children
| Name | Birth | Death | Joined with |
| Isaac Rand Thomas (1864-) | |||
| Malcolm Thomas (1867-1896) | |||
| Elizabeth Whitwell Thomas (1868-1952) | 16 September 1868 Dorchester, Suffolk County, Massachusetts, United States | 28 January 1952 Boston, Suffolk County, Massachusetts, United States | Frederick Josiah Bradlee I (1866-1951) |
| Charlotte Cunningham Thomas (1870-1873) | |||
| Arthur Alexander Thomas (1871-1873) | |||
| Gorham Thomas (1872-1872) | |||
| Mary Frances Thomas (1873-) | |||
| Charles Kemble Thomas (1878-1881) | |||
| Name | Birth | Death | Joined with |
| Helen Sargent Apthorp (1883-1982) | |||
| Robert East Apthorp (1885-1974) | |||
Footnotes (including sources)
| ‡ General |
| ₪2 Wedding 2 |
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70.192.212.170, Viliusx, Robin Patterson