Founded in 1455 by the first Count of Osuna, Don Pedro Téllez-Girón, the house was established in the town of Osuna, in the province of Seville. From its beginnings, the Téllez-Girón family adeptly navigated the complexities of the political landscape. Through strategic marriages and alliances with other noble families, they managed to consolidate their power and extend their influence. One of the most significant moments in the history of the House of Osuna occurred in the 16th century, when the third count, Don Juan Téllez-Girón, became a prominent military and political figure. His participation in the Battle of Lepanto (1571), where Christian forces faced the Ottoman fleet, brought him fame and recognition, reaffirming his house's position in the Spanish nobility.
Over the centuries, the House of Osuna has experienced ups and downs in its fortunes, reflecting the political turbulence of Spain. The War of Spanish Succession in the early 18th century posed a significant challenge for the family, which had to navigate between loyalties to the Habsburgs and the Bourbons. However, despite the challenges, the Téllez-Girón family managed to maintain their status, largely thanks to their investments in agriculture and industry, as well as their remarkable interest in the arts and culture.
Recent research has highlighted the relationship of the House of Osuna with the ar