1804 - 1891 (87 years)
| Orion M. Olmsted | |
| B: | 18 Nov 1856 |
| D: | 17 Jul 1886 |
| May Stewart Macnair | |
| B: | Abt 1880 |
| D: | Yes, date unknown |
| Elsie Macnair | |
| B: | Abt 1882 |
| D: | Yes, date unknown |
| Georgiana O. Olmsted | |
| B: | 29 Aug 1858 |
| D: | 19 Jan 1947 |
| St Albans, Queens, NY | |
| Matthew M Macnair | |
| B: | Jul 1853 |
| New York | |
| M: | 25 Sep 1878 |
| Brooklyn, Kings, New York, United States | |
| D: | 6 Mar 1917 |
| Harriet Harmer | |
| B: | 29 Mar 1836 |
| D: | 3 Nov 1933 |
| St Albans, Queens | |
| William Henry Olmstead | |
| B: | 7 Apr 1833 |
| Smithtown, Suffolk, New York, United States | |
| M: | 30 Dec 1855 |
| Williamsburgh, NY | |
| D: | 8 Nov 1871 |
| Middle Island, Brookhaven, Suffolk, New York, United States | |
| John Olmsted | |
| B: | Abt 1835 |
| D: | Yes, date unknown |
| Harriett Simmons | |
| B: | 1804 |
| England, United Kingdom | |
| D: | 22 Jun 1891 |
| Brooklyn, Kings, New York, United States | |
| William H. Harmer | |
| B: | 1804 |
| England, United Kingdom | |
| D: | 10 Dec 1883 |
| Brooklyn, Kings, New York, United States | |
