Archaeologist Harold Jones uncovered some of the first clues which eventually led to the discovery of Tutankhamun's tomb in the Valley Of The kings by his pals Howard Carter and Lord Carnarvon
But he tragically died from tuberculosis a few years before history's greatest find.
To commemorate the centenary his key role has now been celebrated with the unveiling of a plaque outside the Yorkshire home where he was born in Sackville Street, Barnsley, in 1877.
Special guests helping the Barnsley Mayor were today's Lady Carnarvon and Barnsley's BAFTA TV award winning Prof Joann Fletcher, who both earlier gave a talk in the Town Hall. 
The plaque was made possible following a joint project between Barnsley Museums, the Barnsley Civic Trust and Immortal Egypt TV star Joann.