• 1382–1391:
Alfonso of Aragon and Foix • 1393–1400:
Pedro Enrique de Trastámara, son of
Fadrique Alfonso of Castile • 1400–1423:
Ruy López Dávalos • 1423–1453:
Álvaro de Luna • 1458–1473: Miguel Lucas de Iranzo
Hereditary ceremonial title • 1473–1492:
Pedro Fernández de Velasco, 2nd Count of Haro • 1492–1512:
Bernardino Fernández de Velasco, 1st Duke of Frías • 1512–1528:
Íñigo Fernández de Velasco, 2nd Duke of Frías • 1528–1559:
Pedro Fernández de Velasco, 3rd Duke of Frías • 1559–1585:
Íñigo Fernández de Velasco, 4th Duke of Frías • 1585–1615:
Juan Fernández de Velasco, 5th Duke of Frías • 1615–1652:
Bernardino Fernández de Velasco, 6th Duke of Frías • 1652–1696:
Íñigo Melchor de Velasco, 7th Duke of Frías • 1696–1713: José Fernández de Velasco y Tovar, 8th Duke of Frías == Sources ==