A famous portrait of King Henry VIII, long considered lost, has been found after an art historian spotted it in the background of a photo shared on social media.

The painting in question was once part of a famous set of 22 portraits commissioned in the 1590s by tapestry maker Ralph Sheldon. The portrait hung originally in Weston House, Sheldon’s Warwickshire home, but barely a handful of paintings from the collection survive today.

Art historian Adam Busiakiewicz, who works as a consultant for famous auction house Sotheby’s, spotted the painting in the background of a picture posted by the Warwickshire Lieutenancy on X on 4 July. The account had shared a photo of a reception held at the Shire Hall, and the portrait is just about visible in the background.

“The fact I was lucky to piece together [what it was] in an hour is very exciting,” Mr Busiakiewicz told the BBC.

“I spend a lot of time thinking about paintings and looking at people’s walls.”