Hello, In an 1820's Scottish record I found the man's given name Caull.   I'd never seen it before and from baisc on-line searching I found the case of a living person with the first name Caul,   a nickname for Nicholas.   Someone has suggested it could derive from Malcolm.   Nicholas strikes me as a sensible source for Caull.  Does anyone have any ideas?  Thanks. Jerry Minneapolis, Minnesota,  USA