Hi, Did a search on Scotlands People and it only came up with 22 entries in all their records. There are two Kervins listed in the 1911 census one in Angus and one in Lanarkshire. Another two in Dundee are listed in the 1915 valuation rolls. You can do initial searches on Scotlands People for free now which is wonderful.
https://www.scotlandspeople.gov.uk/