In a charter of 688, Cædwalla grants land at Farnham for a minster, so it is evident that Cædwalla controlled Surrey. He also invaded Kent, in 686, and may have founded a monastery at Hoo, northeast of Rochester, between the Medway and the Thames. He installed his brother, Mul, as king of Kent, in place of its king Eadric. In a subsequent Kentish revolt, Mul was "burned" along with twelve others, according to the "Anglo-Saxon Chronicle". Cædwalla responded with a renewed campaign against Kent, laying waste to its land and leaving it in a state of chaos. He may have ruled Kent directly after this second invasion.