 By 1141, Stephen's forces had been beaten and Reginald was invested with the Earldom of Cornwall by his half-sister Matilda in 1141.In about 1173 he granted a charter to his free burgesses of Truro in Cornwall, and addressed his meetings at Truro to "All men both Cornish and English" suggesting a differentiation of nations.He served as High Sheriff of Devon from 1173 to 1174.