Medina Sidonia: the most famous title in Spain and one of the oldest lineages in Europe.

Medina Sidonia is one of the most famous titles in Spain, representing an ancient and powerful lineage. Founded by the House of Guzmán in the 13th century, following the conquest of Medina Sidonia by Alfonso X of Castile, this family solidified its status with the dukedom granted by Juan I of Castile in 1384. The first Duke, Juan de Guzmán, was notable for his wealth and opulent lifestyle. In the 16th and 17th centuries, the family reached its peak, particularly highlighted by the fourth Duke, Alonso Pérez de Guzmán.

December 8, 2025

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Medina Sidonia: The Most Famous Title in Spain and One of the Oldest Lineages in Europe

In the vast and labyrinthine panorama of Spanish nobility, few names resonate as strongly as that of Medina Sidonia. This title, which has traversed the centuries, is not only a symbol of greatness and power but also a testament to Spain's rich and tumultuous history. The House of Guzmán, the owner of this lineage, stands as a titan of nobility, with origins tracing back to the Middle Ages, and has been the subject of admiration and envy in equal measure. But what lies behind this façade of splendor? What dark secrets are hidden in the halls of their palaces? Prepare for a fascinating journey through the history of Medina Sidonia, a lineage that has been synonymous with extreme wealth and the shadow of decadence.

The Origins of Greatness

The House of Guzmán, founder of the title of Medina Sidonia, dates back to the 13th century when King Alfonso X of Castile granted Guzmán el Bueno the lordship of Medina Sidonia following the conquest of the city. This nobleman and his descendants dominated an extensive territory that stretched across what is now the province of Cádiz. In 1384, King John I of Castile elevated the House of Guzmán to the status of a dukedom, consolidating their power and prestige.

The first Duke of Medina Sidonia, Juan de Guzmán, quickly became one of the most influential figures of his time. His wealth was so immense that historical documents report he possessed more than 140,000 maravedíes annually, a fortune that allowed him to live in a luxury that many could only dream of. Chroniclers of the era, such as the famous Alfonso de Palencia, did not spare any praise for his opulent lifestyle.

Splendor and Ostentation: The El Dorado of the Guzmán

During the 16th and 17th centuries, the family reached the peak of its glory. The fourth Duke of Medina Sidonia, Alonso Pérez de Guzmán, known as...