The Duchess of Cambridge's grandmother worked as a civilian member of staff at Bletchley Park, where code-breakers were credited with shortening the Second World War by at least two years.
Documents from October 1944 show she worked, alongside her twin sister Mary, probably as a duty officer.
Miss Glassborow married Second World War Mosquito pilot Peter Middleton in 1946 and went on to give birth to Michael, Kate's father.
Kate's paternal family tree can be traced back to Henry VIII through Elizabeth Knollys, who was not only the great-niece of Henry VIII’s second wife, Anne Boleyn, but also almost certainly the illegitimate granddaughter of Henry himself.
More top news
The five-year-old was bitten on the face and had to undergo surgery to her eyelid after the dog attacked her at an event in West Yorkshire.
People who voted remain in the EU referendum have gathered at a protest in London to ask the government to make a plan.
Istanbul's busiest airport has been targeted in a deadly gun and bomb attack - here's what we know so far.