Nobility. Old money. Upper class. The patina of generations that transformed the parvenu or nouveau riche into old money. Usually three generations.
I am never able to see a King, Duke or Baron without asking myself: who was the parvenu that brought you the money and (noble) titles?
Did you know that William I (1028-1087), 1st King of England, was the illegitimate son of Robert I, Duke of Normandy? And that he gained his title by conquering England?
Did you know that J.D. Rockefeller (1839-1937) made his money with oil, kerosene and gasoline?