Family: John Kapp Clark, MD / Margaret Newbold Hart (F2)
m. 05 Dec 1942 | Melvin Reamer Clark (1883-1952) 
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 | Julia Wilhelmina Ebert (1882-1941)
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 | Thomas Hart (1894-1975)
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 | Margaret Newbold Smith (1899-1959)
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 | Thomas Hart, Jr (1922-1945)  |
 | Margaret Newbold Hart (1919-1971)
|
 | John Kapp Clark, MD (1914-1988)
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