Researchers have indicated that the Isleworth painting was likely brought to England from Italy in the 1780s by a Somerset nobleman named James Marwood, who was documented as owning a painting attributed to Leonardo and titled "La Jaconde" (the French title of the "Mona Lisa"). A record of holdings of the Avishays Estate in Chard, also mentioning Marwood, includes an 1858 entry for "atalogues of plate and china, and of furniture etc. including picture of 'La Joconda'". In 1913 English connoisseur and art collector Hugh Blaker spotted and acquired the painting from a nobleman's house in Somerset where it was said to have been hanging for over a century. The painting would eventually adopt its unofficial name of "Isleworth Mona Lisa" from Blaker's studio being in Isleworth, West London. In a letter he wrote to his sister Jane, Blaker stated that he thought the work to be by Leonardo and therefore saw potential for making money out of his purchase.