Biography
Joseph Randolph Coolidge was born 17 May 1862 in Boston, Suffolk County, Massachusetts, United States to Joseph Randolph Coolidge (1828-1925) and Julia Gardner (1841-1921) and died 8 August 1928 Sandwich, Carroll County, New Hampshire, United States of unspecified causes. He married Mary Hamilton Hill (1862-1952) 28 October 1886 in Boston, Suffolk County, Massachusetts, United States.
Children
| Name | Birth | Death | Joined with |
| Joseph Randolph Coolidge (1887-1936) | 13 December 1887 Boston, Suffolk County, Massachusetts, United States | 22 September 1936 Sandwich, Carroll County, New Hampshire, United States | Anna Lyman Cabot (1888-1985) |
| Julia Coolidge (1889-1961) | |||
| Mary Eliza Coolidge (1890-1935) | |||
| Hamilton Coolidge (1895-1918) | 1 September 1895 Brookline, Norfolk County, Massachusetts, United States | 27 October 1918 Grandpré, Ardennes, Grand Est, France | |
| John Gardner Coolidge (1897-1984) | |||
| Eleonora Randolph Coolidge (1899-1984) | |||
| Oliver Hill Coolidge (1900-1992) | |||
| Roger Sherman Coolidge (1904-1995) | |||
Footnotes (including sources)
| ‡ General |