Bill, You could try http://www.bunker.org/mcquarrie.html and http://www.electricscotland.com/webclans/m/macquar2.html and go from there. When googling around, one thing to heed is that McQUARRIE is often spelled McWHARRIE (or similar). My McWHARRIEs / McQUARRIEs come from Ayrshire (Cumnock, Sorn, Patna and around). Despite apex being John McWHARRIE & Catherine CAMPBELL (1st child b 1773/4), there is no hint of any link back to Argyllshire let alone Mull let alone Ulva. Best of luck! Howard Geddes