The Merchant Adventurers' Hall is a medieval guildhall in the city of York, England, and was one of the most important buildings in the medieval city. The majority of the Hall was built in 1357 by a group of influential men and women who came together to form a religious fraternity called the Guild of Our Lord Jesus and the Blessed Virgin Mary. In 1430 the fraternity was granted a royal charter by King Henry VI and renamed 'The Mistry of Mercers'. It was granted the status of the Company of Merchant Adventurers of York by Queen Elizabeth I in the sixteenth century.