Background
He was son of Boniface III, Marquess of Montferrat and his third wife Marija Brancović, daughter of prince Stefan III of Serbia.
He was son of Boniface III, Marquess of Montferrat and his third wife Marija Brancović, daughter of prince Stefan III of Serbia.
As the last of his family and despite his poor health, John George had no option than to become the new Marquess. He died 9 days later.