Old money is "the inherited wealth of established upper-class families" or "a person, family, or lineage possessing inherited wealth." The term typically describes families whom are wealthy for generations.
Additional meaning of Old Money:
Although many "old money" individuals are not ranked as high on the list of Forbes Top 400 richest Americans as they were, their wealth continues to grow. Many families increased their holdings by investment strategies such as the pooling of resources For example, the Rockefeller family's estimated net worth of $1 billion in the 1930s grew to $8.5 billion by 2000. In 60 years, four of the richest families in the United States increased their combined $2–$4 billion in 1937 to $38 billion without holding large shares in emerging industries.