DANIEL GARDNER (BRITISH 1750-1805) Portrait of a Gentleman, traditionally believed to be Jackson Mason (1752-1809), attorney and alderman of Lancaster Pastel Oval, 23 x 18cm (9 x 6 3/4in) Provenance: Anne Eliza Dixon, granddaughter of Daniel Gardner.  Sold to Lord Carlingford, K.P.  Lady Strachey, her sale Christie's  Leggatt, 1911 Private collection UK Lady Strachey had a large collection of pastel portraits by Daniel Gardner which were sold at Christie's. The present portrait is possibly the portrait of Jackson Mason (1752-1809), a contemporary of Gardner's. It was bought by Leggatt in 1911 for one guinea. Jackson Mason's death was reported in The Monthly Magazine (vol 28, p. 538) At Lancaster, Jackson Mason esq. one of the aldermen of the borough, highly esteemed for his ability and integrity in his profession as a solicitor, 56.