William Shirley by Peter Pelham after John Smibert, 1747, mezzotint on paper, from the National Portrait Gallery - NPG-NPG 75 80, John Smibert

William shirley by peter pelham after john smibert, 1747, mezzotint on paper, from the national portrait gallery which has explicitly released this digital image under the cc0 license. (https://npg. Si. Edu/object/npg_npg. 75. 80). Date: 1747.