That's absolutely all I have to go on: No clock movement; no case; nothing. For some reason I'm thinking he's European rather than American. A composer, politician, writer from the 19th century?
I don't actually have the pendulum. I took this one photo of it when I saw it. In the 19th Century, the major European clock makers were in Germany and France, so I think the man is probably from one of those countries. The style of the suspension rod at the top of the pendulum doesn't look American to me.
That's him...You got it! When I looked at JNO's picture from yesterday, I didn't think so; however, Dannyk's more or less proves it. Thanks to all of you.