Alix of Brittany, Dame de Pontarcy [SEP] father
Alix of Brittany, Dame de Pontarcy
Alix of Brittany, Dame de Pontarcy, Countess of Blois (6 June 1243 – 2 August 1288), was a Breton noblewoman and a member of the House of Dreux as the eldest daughter of John I, Duke of Brittany. She married John I, Count of Blois. Alix was known for founding religious houses including the Monastery of La Guiche, where she was later buried.
Alix, named after her paternal grandmother, Alix of Thouars, was born on 6 June
Joan, Countess of Blois
Joan of Châtillon ("Jeanne de Blois"; 1253? – 19 or 29 January 1291) was Countess of Blois from 1280 to 1291, and Lady of Avesnes.
She was the daughter of John I, Count of Blois and Alix of Brittany, Dame de Pontarcy.
Joan received the County of Chartres from her father during his life; she later sold these lands to Philip IV of France in 1286. She ceded the lordship of Avesnes to her cousin Hugh before her death