William Of Faucigny Lord

William's father is Louis I Of Faucigny Lord and his mother is Tietburge (Thietburga) Of Savoy.  His paternal grandparents are Aimeraud Of Faucigny Lord and Aalgut (); his maternal grandparents are Amadeo I Of Savoy Count and Adelaide Of Albon. He had a half-brother and a half-sister, named Aimon I Von and Johanna.  He died in 1119.  He was buried in 1119.

They had a son named Rudolph I.