- Birth nameFlorrie FitzSimons
- Clare Hamilton is the sister of Maureen O'Hara, Charles B. Fitzsimons, James O'Hara, Margot Fitzsimons. She made only one movie, Hotel Reserve (1944) in 1944, with James Mason. She died in the late 1990s. She is the aunt of Bronwyn FitzSimons and Charles F. FitzSimons; grand-aunt of C. Beau Fitzsimons.- IMDb Mini Biography By: Florence Stockton
- Aunt of Bronwyn FitzSimons and Charles F. FitzSimons.
- Sister of Maureen O'Hara, Charles B. Fitzsimons, James O'Hara, Margot Fitzsimons and Peggy FitzSimons.
- Grandaunt of C. Beau Fitzsimons.
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