When he was born, David was fifth in the line of succession to the British throne, but now he is the 21st.
While Margaret was Patron of the Royal Ballet School, Sarah is its Vice President.
It was in 1986 that they first started to be photographed at gallery openings and other art world events together, announcing their engagement in 1994.
The couple have two sons:• Arthur Robert Nathaniel Chatto born 5 February 1999 , 29th in the line of succession, and a former to the Queen, his grand-aunt, from 2009 to 2015.
The only daughter of Princess Margaret and Lord Snowdon met her husband-to-be in 1983, while both were working on the set of the film Heat and Dust, yet they would not start dating until three years later.
The original wild child of the royals—, played by Helena Bonham Carter in —has stolen fans' hearts all over again with her hijinks on the Netflix show.