On arrival to the throne,
Louis XII of France intended to establish strong bonds with
Brittany in order to incorporate it to the Kingdom of France, aiming to marry
Anne of Brittany for the purpose; however, he was married by then to
Joan of Valois. The Foix-Albret, led by
Alain de Albret, feared a French takeover of the
Viscounty of Béarn,
de facto sovereign, but claimed now by the French king. The Navarrese monarchs Catherine and John started a rapprochement to Louis XII in order to appease his ambitions in Béarn, by supporting Louis XII in his attempt to marry the Breton princess. Louis XII demanded that Pope Alexander VI issue an annulment of his marriage to Joan. The latter responded in kind by requiring a princess of royal blood to marry his son Cesare. The monarchs of Navarre proposed in turn Charlotte for the bargain. The political move would get the monarchs Catherine and John peace of mind to the north of the Pyrenees, while at the same time establishing friendly diplomatic relations with Rome that could pave the way to solve their conflict over ecclesiastic appointments in Navarre, especially concerning the bishop of
Pamplona Pallaviccini, a designation contested by the Navarrese monarchs. The conditions were set down on the contract of the wedding held in the spring of 1499. The bride's brother
Amanieu d'Albret was also to be made a cardinal. On 10 May 1499, at the age of 19 at
Blois, Charlotte married the
condottiero Cesare Borgia, who was the illegitimate son of
Pope Alexander VI and
Vannozza dei Cattanei. He had recently been created Duke of Valentinois by King Louis XII of France. The marriage was political, arranged with the purpose of strengthening Cesare's alliance with France. Cesare did not remain for long in the territories under the rule of the Foix-Albret. He left for Italy soon after the wedding, with Charlotte pregnant. He neither returned to France, nor knew the daughter born. Cesare accompanied King Louis in his invasion of Italy. . Charlotte was described as having been "beautiful and rich". In 1504, she became the owner of the properties of Feusines, Néret, and La Motte-Feuilly. Cesare and Charlotte had one daughter together: •
Louise Borgia,
suo jure Dame de
Châlus,
suo jure Duchess of Valentinois (17 May 1500 – 1553), she first married on 7 April 1517
Louis II de la Trémoille, Governor of
Burgundy; she married secondly on 3 February 1530, Philippe de Bourbon, Siegneur de
Busset, by whom she had issue. ==Regency and later life==