Luísa of Portugal, Duchess of Cadaval
: Louise; Lisbon
, January 9 1679
, December 23 1732
) was a natural daughter of Portuguese King Peter II
and a Portuguese lady named Maria da Cruz Mascarenhas.
She was raised among the family of secretary of state Francisco Correia de Lacerda and after that at the Monastery of Carnide with her aunt Maria of Braganza (natural daughter of John IV of Portugal). Luísa married D. Luís and after his death married D. Jaime de Melo, respectively 2nd and 3rd dukes of Cadaval.
She died in Évora, Alentejo and is buried at the Convent of Saint John the Evangelist in the same city.