William M O'NeillAge: 11 years1892–1903
- Name
- William M O'Neill
- Given names
- William M
- Surname
- O'Neill
 Birth | May 7, 1892 29 20 |
 Birth of a brother | Joseph Julian O'Neill June 14, 1896 (Age 4 years) |
 Death | November 20, 1903 (Age 11 years) |
| Family with parents |
| father |
George Joseph O'Neill Birth: March 2, 1863 — Missouri, United States Death: December 26, 1928 — Pearl, Gem, Idaho, United States |
| mother |
Helen Louella Dodson Birth: March 24, 1872 — Howard, Missouri, United States Death: November 10, 1912 — Boise, Ada, Idaho, United States |
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Marriage: March 26, 1890 — Fayette, Howard, Missouri, United States |
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2 years himself |
William M O'Neill Birth: May 7, 1892 29 20 — Idaho, United States Death: November 20, 1903 — Idaho, United States |
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4 years younger brother |
Joseph Julian O'Neill Birth: June 14, 1896 33 24 — Boise, Ada, Idaho, United States Death: |
| Father’s family with Elizabeth Kunzler |
| father |
George Joseph O'Neill Birth: March 2, 1863 — Missouri, United States Death: December 26, 1928 — Pearl, Gem, Idaho, United States |
| step-mother |
Elizabeth Kunzler Birth: March 23, 1876 — Sankt Gallen, St. Gallen, Switzerland Death: December 5, 1961 — Emmett, Gem, Idaho, United States |
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Marriage: November 13, 1914 — Boise, Ada, Idaho, United States |
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2 months half-sister |
Helen Susan O'Neill Birth: January 9, 1915 51 38 — Horseshoe Bend, Boise, Idaho, United States Death: January 15, 1998 — Sequim, Clallam, Washington, United States |
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2 years half-brother |
Perry Michael O'Neill Birth: May 30, 1917 54 41 — Centerville, Boise, Idaho, United States Death: March 5, 2006 — University Place, Pierce, Washington, United States |
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2 years half-sister |
Sarah Elizabeth O'Neill Birth: July 19, 1919 56 43 — Star, Ada, Idaho, United States Death: April 24, 1992 — Kooskia, Idaho, Idaho, United States |
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4 years half-sister |
Leona Margaretta O'Neill Birth: July 25, 1923 60 47 — Gem, Idaho, United States Death: March 17, 1975 |