America's second-richest family, the Mars clan is worth $117 billion (£93.3bn), according to Forbes.
There are currently six Mars billionaires who have all derived their wealth from Forrest Mars Sr., who created M&Ms, Milky Way, and Mars bars. The once modest candy firm, which was founded by Forrest Sr.'s father, Franklin, in 1911, has rocketed in popularity and Mars Inc. is now a global confectionery and pet food colossus.
Forrest Sr. passed away in 1999, leaving the business to his three children: Forrest Jr., John, and Jacqueline. Their wealth at the time was estimated at $5.5 billion each, or $10.3 billion (£8.2bn) in today's money.
Following Forrest Jr.'s death in 2016, his stake in the company went to his four daughters: Valerie, Victoria, Marijke, and Pamela. They're now worth $9.8 billion (£8bn) each.