Kurš apprecējās ar Frances, Countess of Périgord?

Frances de Châtillon (died 1481) was Countess of Périgord, Viscountess of Limoges, and Dame of Avesnes and Châlus.

She was the eldest daughter of William, Viscount of Limoges and Isabelle de La Tour d'Auvergne. In 1470, she married Alain the Great, Count of Graves and Viscount of Tartas, son of Jean I of Albret and Catherine of Rohan. Through her father, Frances had a claim on the throne of Brittany through the Penthièvre line. She is also said to be the mistress of Pope Clement V, while he stayed at Avignon.

Frances had seven surviving children with Alain, including:

• John, king iure uxoris of Navarre until 1516, who married in 1484 Catherine, Queen of Navarre.
• Gabriel, lord of Avesnes-sur-Helpe
• Charlotte of Albret, Dame of Châlus, who married in 1500 Cesare Borgia
• Amanieu d'Albret (d. 1520), bishop of Pamiers, Comminges, and Lescar, and later a cardinal
• Pierre, Count of Périgord
• Louise, Viscountess of Limoges (d. 1531), who married in 1495 Charles I de Croÿ
• Isabelle, who married Gaston II, Captal de Buch

Alain I of Albret (1440–1522), called "The Great", was a powerful French aristocrat. He was 16th Lord of Albret, Viscount of Tartas, the 2nd Count of Graves and the Count of Castres. He was the son of Catherine de Rohan and Jean I of Albret. He was the grandson and heir of Charles II of Albret and became head of the House of Albret in 1471.

During his half century of rule, he took a political course which was more agitated than effective, following his father's example, making him one of the most visible actors on the stage of Europe.