For anyone missing a connection in Sandy's note, Sinclair = St. Clair, the name of the person who started this thread. I'm curious, Mr. or Ms. J. St. Clair--who published the music you have, and when? That might help the people who know this kind of history (not me, unfortunately) evaluate the claim about the Templars.

As for coincidental birthdays--as Sandy implied, don't even go there!