Hugh Grosvenor, the Duke of Westminster and Britain's most eligible bachelor, is set to marry Olivia Henson in Chester Cathedral today. Kate Middleton's lookalike Olivia Henson arrives for her wedding. (AP)Who is Olivia Henson? Hugh Grosvenor, the Duke of Westminster, left, arrives at Chester Cathedral for his wedding to Olivia Henson in Chester, England, Friday June 7, 2024. (AP)The Grosvenor family has a long history with the Royals; King Charles is Hugh's godfather, and the groom is also a godfather to Prince William's son Prince George and Prince Harry's son Archie.