By his wife, he had a son, Roger IV of Foix, and a daughter, Cecilia of Foix. Cecilia of Foix married Álvaro, Count of Urgell. When his relations with his French sovereign allowed it, he concentrated on expansion and fortification southwards.
His wife gave him a son, Roger IV of Foix, and a daughter, Cecilia of Foix.  Cecilia later married Álvaro, Count of Urgell. He expanded and fortified his territory in the south when he had good relations with his French ruler.