House of Lusignan
He died unmarried and childless, ending the senior male line of the House of Lusignan (a junior male line through Guy's great-uncle, William de Valence, continued until the death of that man's son, Aymer, in 1324). In spite of this junior male line, Guy was succeeded by his sister Yolande I de Lusignan, except in Angoulême, since after his death it was sold to the French Crown by his sisters Jeanne and Isabelle.