Actually, I don't drink, John. I do make typos however :-)Interesting to read all the input so far. It would appear that KOH-lin is not a universal American usage.
My recollection, as I said in the first post is that Powell was referred to as "Collin" by the media in the early nineties, I am sure I would have noticed otherwise.
But, my memory MAY be playing tricks.
Murray