Would your father be James Callow? He would be a first cousin of the late Edward Corteen of Ballasholague, Maughold, who knew a great deal about Northside families, and helped many people find ancestors and relations. Your grandfather Wilfred Kerruish Callow would have been a first cousin of Sir Charles Kerruish, Ballafayle, Maughold. The Ballafayles have been worked out in detail by Constance Radcliffe, co-author of books about Maughold, Ramsey, etc. If you would like to pursue this, please send me an e-mail, and let me know your address. Perhaps you know all this already, as you are offering help rather than seeking it.