The Colquhoun Arms in Luss used to be one of my stamping grounds years ago. Never clapped eyes on Sir Ivar though. The estate gates were always kept firmly shut to the likes of me. The family seems to have had a bit of bad luck down the ages, drowning on Loch Lomond, down to his elder son. This site has a lot of history for those interested - http://www.turningwood.fsnet.co.uk/rossdhuhouse.html