The dukedom of Arcos was created by Queen Isabella I of Castile, on 20 January 1493, for Rodrigo Ponce de León, then count of Arcos. The dukedom is among the first 25 titles which reached the rank of Grandee of Spain 1st Class, in 1520. Its name derives from Arcos de la Frontera in Cádiz.
Pedro Ponce de León, 1st Count of Arcos
Juan Pérez Ponce de León, 2nd Count of Arcos
Rodrigo Ponce de León, 3rd Count of Arcos
Francisca Ponce de León, 4th Countess of Arcos:
Rodrigo Ponce de León, 5th Count of Arcos (1488–1493). 1st Duke of Arcos (since 1493)
Rodrigo Ponce de León, 1st Duke of Arcos (1493–1530)
Luis Ponce de León, 2nd Duke of Arcos (1512–1573)
Rodrigo Ponce de León, 3rd Duke of Arcos (1534–1630)
Rodrigo Ponce de León, 4th Duke of Arcos (1602–1658)
Francisco Ponce de León, 5th Duke of Arcos (1632–1673)
Manuel Ponce de León, 6th Duke of Arcos (1633–1693)
Joaquín Ponce de León, 7th Duke of Arcos (1665–1729)
Joaquín Ponce de León, 8th Duke of Arcos (1667–1743)
Manuel Ponce de León, 9th Duke of Arcos (1670–1744)
Francisco Ponce de León, 10th Duke of Arcos (1677–1763)
Antonio Ponce de León, 11th Duke of Arcos (1726–1780)
María Josefa Pimentel, 12th Duchess of Arcos (1750–1835)
Pedro Téllez-Girón, 13th Duke of Arcos (1810–1844)
Pedro Téllez-Girón, 14th Duke of Arcos (1814–1882)
José Brunetti, 15th Duke of Arcos (1839–1928)
Ángela María Téllez-Girón, 16th Duchess of Arcos (b. 1925)
Ángela María de Solís-Beaumont, 17th Duchess of Arcos (b. 1950)
The current heir apparent to the title is the 17th duchess's daughter, Ángela María de Ulloa, Countess of Ureña (b. 1973).
