Pedro Angel de la Serna del Castillo
- Born: 2 Aug 1760, Tarrueza, Santander, España
- Marriage (1): Francisca Fernandez Cavada on 28 Dec 1777 in Tarrueza, Santander, España
- Marriage (2): Francisca Undurraga
- Died: 6 Sep 1829, Laredo, Santander, España at age 69
Pedro married Francisca Fernandez Cavada, daughter of Andres Fernandez Perez and María Josefa de la Cavada Castillo, on 28 Dec 1777 in Tarrueza, Santander, España. (Francisca Fernandez Cavada was born circa 1749 in Tarrueza, Santander, España and died on 13 Jul 1794 in Laredo, Santander, España.)
Pedro next married Francisca Undurraga.
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