Happy Religious Freedom Day!

I just made it.  Here is a blurb from the President's proclamation:

On Religious Freedom Day, we commemorate the passage of the 1786 Virginia Statute for Religious Freedom, authored by Thomas Jefferson, and we celebrate the First Amendment's protection of religious freedom.

You know, not to be a crank, but I would much prefer pegging "religious freedom" day to someone other than Thomas Jefferson.  How about -- oh, I don't know -- January 28, the day on which it is said that Emperor Henry IV knelt before Pope Gregory VII at Canossa?