He married Manuela Sánchez-Arjona y Velasco (12 August 1887 – 23 April 1957), daughter of the 1st Marquis of Casa Arjona and twice great-granddaughter of the 2nd Marquis of Ríocabado, and had six children and daughters. Eduardo de Acha died in Madrid on Saint Andrew's Day (November 30) of 1928, at the age of 50.
