A concise answer: a descendant of a wealthy family is often referred to as a scion. Context and nuances:

• Common term: scion. It denotes an heir or descendant of a wealthy or influential family, historically emphasizing lineage and potential inheritance within a privileged lineage. This usage is widely recognized in dictionaries and contemporary writing.

• Alternatives depending on context:
  • Heir: focuses on future inheritance or rights to property or titles.
  • Offspring: a neutral biological term, not specific to wealth or status.
  • Beneficiary: appears in legal documents, often broader than just wealth or lineage.
• Cultural nuance: “scion” carries connotations of prestige and inherited social capital, whereas words like “descendant” are more neutral and generic.

If you’d like, I can tailor the term to a sentence or a specific context (fiction, journalism, legal writing) and suggest synonyms with nuance notes.