Charlotte of Albret

Charlotte of Albret, suo jure Dame de Chlus, Duchess of Valentinois , also known as Charlotte dAlbret, was a wealthy French noblewoman of the Albret family. She was the sister of King John III of Navarre, and the wife of the notorious Cesare Borgia whom she married in 1499. She was the mother of his only legitimate child, Louise Borgia to whom she acted as regent following the death of Cesare.

Charlotte was born in 1480, the daughter of Alain I of Albret, Lord of Albret, and Franoise of ChtillonLimoges. Her paternal grandparents were Jean I dAlbret and Charlotte de Rohan, and her maternal grandparents were Guillaume de Blois, Viscount of Limoges and Isabelle de La Tour dAuvergne, daughter of Bertrand V de La Tour, Count of Auvergne and Boulogne, and Jacquette du Peschin. Her paternal greatgreatgrandfather was Charles dAlbret, Constable of France, who was killed while commanding the French troops at the Battle of Agincourt in 1415. She had six siblings including John dAlbret who became King of Navarre upon his marriage to Catherine of Navarre.

Source: Wikipedia