Marina Fernández de Córdoba

Mariana Fernández de Córdoba y Ayala (c. 1394 – 1431), also known as Mariana de Ayala Córdoba y Toledo, was the fourth Lady of Casarrubios del Monte in the province of Toledo.She was the daughter of Diego Fernández de Córdoba y Carrillo, first Lord of Baena, and Inés Ayala y Toledo, third Lady of Casarrubios del Monte.

Mariana married Fadrique Enríquez de Mendoza, Admiral of Castile and Lord of Medina de Rioseco around July 1425.They had one daughter, Juana Enríquez (1425–1468), who marriedJohn II of Aragon.