William III "The Great" , Count of Poitou

William III "The Great" , Count was born about 0969 in of Poitou,France.  William III "The Great" , Count's father was Guillaume II "Fier deBras" , Count of Poitou and his mother was Emma deBlois.  He was an only child.  He died on January 31st, 1030.

‌William III "The Great" , Count and Agnes were married in a religious ceremony in 1018.  They had a son named William IV , Count.