after him.

Early life and education

Leidy was born on September 9, 1823, in Philadelphia, to an established Pennsylvania Dutch family. His father, Philip, was a hatter; his mother, Catharine, died during childbirth when he was young. His father then married his wife's first cousin, Christiana Mellick. Leidy also had a brother, Thomas Leidy.

With support from his stepmother and after overcoming the opposition of his father, who wanted him

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