Petronila Riquelme

Petronila Riquelme Rodríguez ( – 29 March 1870), known posthumously as Petronila O'Higgins, was a Chilean and Mapuche–Pehuenche servant and the unacknowledged daughter of Bernardo O'Higgins. near Los Ángeles to Bernardo O'Higgins and Patricia Rodríguez, a Mapuche–Pehuenche servant and nanny to the O'Higgins family. Through her father's relationship with , Riquelme was the elder half-sister of . Riquelme's marriage certificate lists her name as Petronila Riquelme y Letelier, and her parents as Nicolás Riquelme and Juana Letelier. Riquelme's grandmother was listed as her godmother.

Riquelme and Pequeño had five children. Following the breakdown of her marriage in the late 1840s, Riquelme remained in Peru whilst her husband traveled to Chile with the couples five children. In 1870, Riquelme boarded a steamship from Callao to Valparaíso, but died of a On 29 March 1870 died of a heart attack 7 miles from port. Riquelme was buried at Cementerio Nᵒ 1 de Valparaíso.

Riquelme is the great-great-grandmother of the filmmaker , and is the subject of Pequeño's 2001 documentary La hija de O'Higgins.