 In 1599 he remarried Helen Schaw, niece of William Schaw, an event which caused a feud with Francis Mowbray, brother of Helen's dead husband, Robert Mowbray.They had a further child together.Calvin's case, the leading legal test of the status of citizenship after the 1603 union of the crowns of England and Scotland, was at least notionally concerned with the legal rights of Colville's young grandson James.