He was the 2nd son of Manuel Ponce de León, 6th Duke of Los Arcos, in Spain, and Maria de Guadalupe of Lencastre, 6th Duchess of Aveiro. His mother was recognised by the Portuguese King, as Duchess of Aveiro, in 1679, on the condition she would return to Portugal.
Their elder son, Don Joaquín, would inherited the Spanish House of the Dukes of Los Arcos, while the younger, Dom Gabriel, would inherited the Portuguese House of the Dukes of Aveiro. Only after his mother"s death (1715), he came to Portugal. While he lived in Spain, King Charles II granted him the title of Duke of Baños, and he served in the Spanish army, both in the Catalonia and in the Flanders campaigns.
He died single without issue.
