I recently reread the article on Wikipedia that Peter A. Kincaid contributed and in doing so I see a likely connection between some Kinkeads/Kincaids and Patrick Kincaid of Leith. Here is a quote from the article: "Patrick Kincaid of Leith, was Master Brewer to King James V in the 1530s and 1540s.[11" ;-) Seriously, if you haven't read this great article, it is at http://en.wikipedia.org/wiki/Clan_Kincaid