Maria Mitchell
- Yes, date unknown( = Descendancy chart to this point, = Expand, = Collapse)
- 1 Maria Mitchell [1] d. Yes, date unknown
- Samuel Sleep d. Yes, date unknown
- 2 Rachel Sleep [1.1] b. 20 Oct 1862 d. 27 Jan 1927
- Henry Thomas b. 12 Nov 1858 d. Yes, date unknown
- 3 Russell James Thomas [1.1.1] b. 5 Jan 1885 d. Yes, date unknown
- + Ann Seaton b. Abt 1885 d. Yes, date unknown
- + Ann Seaton b. Abt 1885 d. Yes, date unknown
- 3 Harold Ambrose Clifford Thomas [1.1.2] b. 3 Apr 1896 d. Yes, date unknown
- + Edna Russell b. 30 Jan 1899 d. Yes, date unknown
- + Edna Russell b. 30 Jan 1899 d. Yes, date unknown
- 3 Russell James Thomas [1.1.1] b. 5 Jan 1885 d. Yes, date unknown
- Henry Thomas b. 12 Nov 1858 d. Yes, date unknown
- 2 Rachel Sleep [1.1] b. 20 Oct 1862 d. 27 Jan 1927
- Samuel Sleep d. Yes, date unknown