The Duchess of Edinburgh is celebrating her birthday today, amid pressure to step up after King Charles and Princess Kate’s health concerns. Sophie, who turned 59 today, married Prince Edward in 1999 and is one of the hardest-working members of the Royal Family. In 2023, the duchess carried out 219 engagements, which landed her in fifth place behind Princess Anne, King Charles, Prince Edward and Queen Camilla respectively. It is expected that Sophie and Edward, along with the Princess Royal, will have to step up their number of engagements in the following weeks due to the recent health concer…