1847 - 1908 (60 years)
| Katherine McKinley 1871-1876 |
| Katherine McKinley | |
| B: | 25 Dec 1871 |
| Canton, Stark, Ohio, USA | |
| D: | 25 Jun 1876 |
| Canton, Stark, Ohio, USA | |
| Ida McKinley 1872-1873 |
| Ida McKinley | |
| B: | 1 Apr 1872 |
| Canton, Stark, Ohio, USA | |
| D: | 22 Aug 1873 |
| Canton, Stark, Ohio, USA | |
|
| Ida Saxon 1847-1908 |
| Ida Saxon | |
| B: | 8 Jun 1847 |
| Canton, Stark, Ohio, USA | |
| D: | 26 May 1908 |
| Canton, Stark, Ohio, USA | |
 | William McKinley, II 1843-1901 |
| William McKinley, II | |
| B: | 29 Jan 1843 |
| Niles, Trumbull, Ohio, USA | |
| M: | 25 Jan 1871 |
| Canton, Stark, Ohio, USA | |
| D: | 14 Sep 1901 |
| Buffalo, Erie, New York, USA | |
| Unknown |
