Here are some of his lookalikes from history:
Gorden Kaye. aka Rene in Allo Allo.
Arthur Scargill
Bernard Manning
I'm pretty sure someone used to run a blog of modern-day-lookalikes-in-historical-paintings... but I can't find it now. If there's one out there let me know. In the mean time I've created a Tumblr blog for these: timetravellinglookalikes.tumblr.com/
Let me know if I'm treading on anyone else's toes.
And let me know about any time travelling lookalikes you might have seen. But not men with red beards that you think look like me. I'm a bit bored of those.
