Katharine, Duchess of Kent – $10 Million
Katharine, Duchess of Kent is married to the Queen’s cousin Prince Edward, Duke of Kent. She became the first member of the royal family to convert to Roman Catholicism. Beginning in 2002, she decided to limit her public life, although she still makes appearances at major events like royal weddings and jubilee celebrations.
Prince Andrew, Duke of York – $82 Million
Prince Andrew is the younger brother of Prince Charles. He was married to Sarah Ferguson, better known as Fergie, who he divorced in a highly publicized divorce. He gets a tax-free allowance of over $300,000 per year thanks to his wealthy mother, although the majority of his wealth comes from his luxury real estate portfolio.