Otto I, Holy Roman Emperor
When Matilda's brother, 13-year-old Lothair ascended the French throne in 954, Gerberga acted as regent. In 964 Matilda was married to Conrad, the Welf ruler of the Kingdom of Burgundy since 937. King Conrad strongly relied on the support of Otto I, Holy Roman Emperor since 962, Matilda's maternal uncle and husband of Conrad's sister Adelaide. As her dowry, the young queen brought her husband the city of Vienne, which her brother Lothair had ceded to her.