If a person's last name is Rich, where does that mean their ancestors are probab

Question:

If a person's last name is Rich, where does that mean their ancestors are probably from?

I know Rich is typically an English name, but like is it part Irish, French? Also, is there any quick and simple way you could tell the ancestor's professions?

Thanks!

Best Answer - Chosen by Asker: Very hard to say because names often undergo many changes over time. Spellings change to match dialect, and longer names become shorter over time. It could be shortened form of a French name, my intuition is telling me.