Hallo Lynn. Just looked up our large scale map of Rogart area and wonder whether Kerrow might be an English vesion of Chaoruinn. At the mouth of Strath Tollaidh is Leathad a'Chaoruinn and Meall a'Chaoruinn. They are the only names I can find anywhere near in sound. Some entries in the Rogart OPR refer to Strath Tollaidh. ( after all if Cnoc Ard an Tionail can be as it seems written as Knockarthur then possibilities are endless)! regards, Ann Mackay