Mary Hog Barnard (née Girtin) (1828–99) was the youngest daughter of Thomas Calvert Girtin (1801–74), the only child of the artist (the Girtin Archive, held by the Department of Prints and Drawings in the British Museum, has her dates as 1830–1918). The artist’s son died intestate in 1874, and Mary Barnard, as she became following her marriage to Alfred Francis Barnard (1821–94) in 1854, inherited a substantial group of Girtin’s works through her brother, George Wyndham Hog Girtin (1835–1911), who administered the estate on behalf of the family. Although fifteen of these were sold at auction in 1886, she passed most of her collection on to her son, Francis Pierrepont Barnard (1854–1931), a noted collector of Girtin’s work, who bequeathed the works to the Ashmolean Museum, Oxford (Exhibitions: Christie’s, 31 May 1886).