When Sophie, the Duchess of Edinburgh , married into the Royal Family in 1999 after tying the knot with Prince Edward , she was thrown in the deep end as she worked to maintain her newfound royal identity and her career in public relations. But as the Duchess transitioned into a more full-time role within the monarchy, she quickly became a guiding light for the younger generation of royals to follow her lead as she undertook her work with the Firm with grace. And a new documentary has explored