The heir to an estate in Wales, a musician and mathematician, Calvert Jones led the life of a leisured gentleman and gave up his parishes early in life. His watercolours, mainly of shipping, are fluid and accurate and it is possible that he may have been associated with George Chambers. By the early 1840s he was experimenting with the newly invented process of photography, in particular the calotype, and in this he was W.H. Fox Talbot's closest collaborator, as well as his cousin. The drawing is dated 3 September 1833.