| Birth | Mar 1857 | Illinois | | | |
| Census | 1 Jun 1860 | Ursa, Adams Co., IL, pg. 412; Stephen D. Washburn, 3 (1856-57) born IL. | | | |
| Census | 1 Jun 1870 | P.O. Quincy, Ursa Twp., Adams Co., IL, pg 14; Stephen D. Washburn, 18 [sic] (1851-53), born IL. NOTE: Listed between Mary and Joanna-age appears to be error. | | | |
| Census | 1 Jun 1880 | Ursa Twp., Adams Co., IL, ED 21 pg 25A; S. Douglas Washburn, son, 23 (1856-57) born IL father born KY mother born MO, farmer. Lives with parents and is apparently unmarried. | | | |
| Marriage | 3 Feb 1881 | Adams Co., Illinois - Mary GREEN | |  | |
| Census | 1 Jun 1900 | Paso Robles, San Luis Obispo Co., CA, ED 26 Sh 11B; Stephen D. Washburn, head, born Mar 1857, 43, married 19 yr., born IL father born KY mother born MO, day laborer. | | | |
| Census | 15 Apr 1910 | P Stephen D. Washburn, head, 53 (1856-57), marriage 1 of 29 yr., born IL father born KY mother born MO, teamster - general work. | | | |
| Census | 1 Jan 1920 | Paso Robles, San Luis Obispo Co., CA, ED 45 Sh 18A; Steven Washburn, head, married, 62 (1857), born IL father born KY mother born MO, teamster - farm. | | | |
| Census | 1 Apr 1930 | Paso Robles, San Luis Obispo Co., CA, ED 16 Sh 13A; Stephen D. Washburn, head, 73 (1856-57), 23 at first marriage, born IL father born KY mother born MO, laborer-city. | | | |
| Death | Aft 1 Apr 1930 | | | | |
| Reference No | | 5729 | | | |