According to the Related Link, it's English.
There are Germans with the last name "Hilbert." Like the mathematician, David Hilbert. Unsure of its commonality in Germany, though.
Probably not, unless it is a respelling of another name (which happens a lot when people immigrate). From the spelling and sound of it, it could be Irish, Scottish, or Baltic, however. Hard to tell...
Kevin in glebe first and midle schol in 7c love jorgiana
I don't think so. Never hered it in Germany. But there is a town "Rindal" in Norway. So i would guess it's a norwegian name.
Yes, it is. Schwartz means "Black" and was originally spelled without a "t" in Germany.