John Postle Heseltine
John Postle Heseltine (1843 – 2 March 1929) was a painter and art collector who became a trustee of the National Gallery, London. He donated the paintings A Garden Scene with Waterfowl by Anthonie van Borssum, Portrait of a Grand Vizir by Jean-Etienne Liotard, A Cowherd passing a Horse and Cart in a Stream by Jan Siberechts, and Portrait of a Man, probably Johann Feige by Lucas Cranach the Elder.
His brother was Rev. Ernest Heseltine, who assisted the officiation of his eldest daughter Dorothy's marriage to Viscount Cantelupe in 1890. Dorothy's husband died in a boating accident a few months after their marriage and she later married Baron George Jeffreys.
His daughter Clarissa Mary Heseltine married at St Paul's Church, Knightsbridge on 8 October 1902 Charles W. Sofer Whitburn, son of Charles Joseph Sofer Whitburn. She was well known as a racehorse breeder, and at one point live at Amport House, near Andover, Hampshire.