 Throughout the power struggle between Normandy and England in the early 1090s, Ranulph ended up switching sides and submitting to the Duke of Normandy.At the Welsh Marches in 1093, Ranulph joined Norman forces, leading with Earl Roger of Shrewsbury, Ralph Tosny of Clifford Castle and Philip de Braose of Radnor.They invaded the ancient Welsh county of Radnorshire, which is now Powys, and sacked the kingdom of Cynllibiwg.