Eugenie is 30 and Jack is 34, meaning there is a four year age gap, and the couple are currently expecting their first child together.
Prince Harry, 36, has been married to Meghan Markle, 39, since 2018, and there is a three year age gap between the pair.
Prince William, 38, and Kate, Duchess of Cambridge, 38, are both senior working members of the Royal Family.
The pair met while they were students at the University of St Andrews in Scotland, and Kate is five months older than William.
