Infanta Pilar married Don Luis Gómez-Acebo y Duque de Estrada, Viscount de la Torre, Grandee of Spain (Madrid, 23 December 1934 – Madrid, 9 March 1991) on 5 May 1967 in Lisbon, Portugal. He was a son, the fourth of six children, of Jaime Gómez-Acebo y Modet and wife (m. 1927) Isabel Duque de Estrada y Vereterra, 9th Marchioness de Deleitosa .