William I (III) Towhead of Poitou was born about 0915. William I (III) Towhead of Poitou's father was Ebalus the Bastard of Poitou Manzer and his mother is Emiliane. His paternal grandfather was Ramnulf II of Poitou and his paternal grandmother is Irmgard. He was an only child. He died on April 3rd, 0963.