What's the meaning of your surname

I saw an article in a magazine at the weekend about surnames, and their meaning. I’ve never thought about this before and thought I’d look up mine, what a shock :-

Definition: Ugly head; one who had an ugly head

Surname Origin: Irish, Scottish (Scots Gaelic)

Alternate Surname Spellings: KENNEDIE

My mothers maiden name was Gregory which means Watchman.

Has anyone else found the meaning or definition of their surname ?