| Birth | Aug 1850 | William Dey was born in Aug 1850 in Scottland. |
| Marriage | about 1900 | He and Mary Ellen Strong, daughter of Charles Strong and Ellen (Unknown), were married about 1900. |
| 1900 Census | 18 Jun 1900 | William Dey appeared as head of household in the 1900 Federal Census of Home Township, Brown County, Minnesota, as William Dey. Living with him was his wife, Mary, as well as a brother-in-law, John Strong. |
| 1910 Census | 27 Apr 1910 | William Dey appeared as head of household in the 1910 Federal Census of Home Township, Brown County, Minnesota, as William Dey. Living with him was his wife, Mary. |
William Dey