Overijssel was formerly known as Oversticht. In 1336, it was made part of Guelders. It was given to the Bishopric of Utrecht in 1347. Utrecht was known as "het Sticht". The Bishops gave the Oversticht to the Emperor Charles V in 1528, who styled himself "Lord of Overijssel". With this, he gave the province its modern name. The people joined with the other Dutch and rebelled against Charles' heir Philip II. Overijssel became governed by the most powerful mayors and lords in the province.