Noblesse

Jean Iv de BRIENNE, comte de Beaumont, son of Robert de BRIENNE and Marie de CRAON, was born in 1302 and died in 1378 at the age of 76. He married Marguerite de POITIERS, daughter of Aymar V de POITIERS and Sybille DES BAUX, on January 8, 1331. . He had a relationship with Isabeau d'HARCOURT, daughter of Jean Iii d'HARCOURT and Alix de BRABANT

Louis Ii de BRIENNE, son of Jean Iv de BRIENNE and Marguerite de POITIERS. He died on May 31, 1364. He married Isabelle de LA MARCHE, daughter of Jacques Ier de LA MARCHE and Jeanne de CHÂTILLON SAINT-PAUL, on November 21, 1362. She was born in 1340 and died in 1371 at the age of 31.

Marie de BRIENNE, dame de Beaumont, daughter of Jean Iv de BRIENNE and Isabeau d'HARCOURT. She died in 1372.

Marie de CHAMAILLARD, daughter of Guillaume de CHAMAILLARD and Marie de BRIENNE. She died on November 27, 1425. She married Pierre Ii d'ALENÇON, son of Charles Ii d'ALENÇON and Marie de LA CERDA, on October 28, 1371. He died in 1404.