John Robertson
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- 1 John Robertson [1]
- Mary Mealmaker Boyack
- 2 Mary Ann Robertson [1.1] b. 13 May 1857 d. 1 Oct 1904
- Orville Sanford Markham b. 23 May 1851 d. 22 Sep 1902
- 3 James Boyack Markham [1.1.1] b. 24 Nov 1876 d. 1 Aug 1915
- 3 Lucy Jane Markham [1.1.2] b. 3 Mar 1880 d. 24 Jan 1919
- 3 Mary Ann Markham [1.1.3] b. 10 Mar 1881 d. 10 Mar 1881
- 3 Orville Sanford Markham, Junior [1.1.4] b. 20 Feb 1882 d. 7 Aug 1925
- + Edith
- + Edith
- 3 Eliza Maretta Markham [1.1.5] b. 27 Jul 1884 d. 24 Oct 1948
- 3 Atta Mable Markham [1.1.6] b. 10 Jun 1887 d. 3 Mar 1962
- 3 Allen Markham [1.1.7] b. 10 Nov 1888 d. 10 Nov 1888
- 3 Markham [1.1.8] b. 10 Oct 1889 d. 10 Oct 1889
- 3 Wells Curtis Markham [1.1.9] b. 11 Jan 1891 d. 11 Jan 1891
- 3 William Wallace Markham [1.1.10] b. 6 Jul 1892 d. 10 Aug 1928
- Ruth Sophia Hillstrom b. 29 Apr 1895 d. 1 Aug 1972
- 4 William Wallace Markham [1.1.10.1]
- 4 Betty Ruth Markham [1.1.10.2]
- 4 Barbara Mae Markham [1.1.10.3] b. 26 Oct 1923 d. 6 May 1996
[ =>]
- 4 William Wallace Markham [1.1.10.1]
- 3 Grace Robertson Markham [1.1.11] b. 11 Nov 1895 d. 10 Feb 1946
- 3 James Boyack Markham [1.1.1]
- 2 Mary Ann Robertson [1.1]