Marshall Hartley, a stuff and woollen printer of Leeds had a son and grandson who both became prominent in the Wesleyan ministry.
John Hartley (c.1820-1896; e.m. 1839) was born in Leeds. He trained at the Hoxton Theological Institution. After forty years in circuit, he was appointed the first Governor of Handsworth College in 1881. As a preacher he was described as 'perilously popular, ... strikingly prepossessing in appearance and fluent in speech'. In 1892 he retired to his native Leeds, where he died on 14 April 1896.
His son, Marshall Hartley ll (1846-1928; e.m. 1868) was born at Stamford Hill on 26 January 1846. His maternal grandfather was the Rev.John Anderson (1791-1840; e.m. 1812). He was educated at Woodhouse Grove School. As a Secretary of the Missionary Society, 1888-1929, he visited South Africa, China and India in support of the missionaries there. He was Secretary of the Conference from 1895 to 1902 and President in 1903. He died on 21 December 1928.
His younger son, Robert Nightingale Hartley (1854-1912), born at York, was also educated at Woodhouse Grove School; then at Leeds School of Medicine, under Lister at King's College Hospital, London and at Moorfields Eye Hospital. From January to October 1878 he was the Assistant Resident Medical Officer at Leeds Infirmary, during which time he was mugged, causing concussion and permanent epilepsy. Subsequently he was surgeon to the Leeds Public Dispensary and from July 1894 at the Infirmary, but had to retire in 1896 from ill health. He was lecturer and later Professor in Public Health at the Yorkshire College (subsequently Leeds University) for twenty years..