As a result of Somairle's death in battle, the Kingdom of the Isles fractured once again. Although Guðrøðr's brother, Rǫgnvaldr, is recorded to have gained power, Guðrøðr was able overcome him within the year. Upon Guðrøðr's reestablishment in the Isles, the realm was again divided between him and Somairle's descendants, in a partitioning that stemmed from Somairle's coup in 1156. The Battle of Renfrew may have been Malcolm's greatest victory. It is certainly the last major event of his reign on record.