old money
1. Families who have amassed great wealth over a very long time; individuals of such a family. If you don't think that old money is controlling our elected officials, you need to get your head examined! You can always tell which students in this university come from old money.
2. A great amount of inherited wealth that has been passed along a family line for many generations. He hasn't had a job in years, relying instead on his family's old money.