A portrait purporting to be of a living Lady Jane Grey, best-known from a post-death painting of her execution, has gone on display.

Research by the charity English Heritage suggests it may have found a portrait of England's shortest-reigning queen Lady Jane Grey.

English Heritage has published new research into the picture, supporting the fact it may depict Lady Jane Grey, but its sitter was also proposed in a 2007 exhibition

Researchers believe they may have identified the only known portrait of Lady Jane Grey, the so-called “Nine Days Queen,” painted before her death.

An intriguing portrait believed by some to be of England’s ill-fated queen, Lady Jane Grey, could be the only one painted during her lifetime, research suggests — but not everyone is convinced.

Experts believe they have uncovered enough evidence to suggest a Tudor-era portrait could be the only known image of Lady Jane Grey painted in her lifetime. She was "the nine days queen", whose brief reign was an unsuccessful bid by Protestants to prevent the accession of her Catholic cousin Mary I (1553 to 1558).

Mystery Solved? Is this the only portrait of tragic teen Queen Lady Jane Grey? - Compelling evidence that a 16th-century painting depicts Lady Jane Grey – the monarch executed in 1554 – in a stunning

Researchers may have found the only known portrait of Lady Jane Grey, which was defaced in an iconoclastic attack.

New research from English Heritage and the Courtauld Institute of Art has provided “compelling evidence in favour of confirming” that a mysterious portrait depicts the “nine-day queen”.