Powell married in 1852 Mary Elizabeth Marten (1826–1871), daughter of Charles Marten (1797–1851) and his wife Hannah Watson (1798–1881), daughter of Joseph Watson of Highbury. Charles W. Marten was a founder of Marten & Heseltine in 1848, with Edward Heseltine, and Powell had used the company as London agents from his days in Leeds. Their children were: •
Christiana Herringham (1852–1929), artist and patron. •
Mary Elizabeth Powell (1854–1907), embroiderer, who married Hugh Thackeray Turner. • Charles Marten Powell (born 1855), surgeon. He graduated B.A. at
Corpus Christi College, Oxford in 1879. • Thomas Edmund Powell (born 1857), solicitor. He graduated B.A. at
Oriel College, Oxford in 1880. • Eleanor Grace Powell (1859–1945). At the time of the 1881 census she was a school teacher in
Lewisham. She took a Class 1 in history in the Oxford University Women's Examination of 1886, from
Somerville Hall. She was then a tutor there, from 1886 to 1892. In the 1890s she contributed to the
Dictionary of Political Economy (85 articles) and
Dictionary of National Biography. She was active in the
settlement movement with
Margaret Sewell. • Rosamond Emma Powell, married 1894 William Alfred Wills, M.D. • Herbert Andrews Powell (born 1863), physician. He graduated B.A. at Corpus Christi College, Oxford in 1885. At Oxford he knew
Henry Newbolt, who visited the Powell family around 1882, finding them "a special kind of civilisation", and the father "Olympian", terminating a dance at 1 a.m. and switching off the lights. • Agnes Margaret Powell (1866–1918), married 1889 Charles Wolryche Dixon: he was the second son of
George Dixon. She wrote
The Canteeners (1917), a memoir of her
Red Cross experiences in World War I. • Theodora Powell (1871–1920), studied at Somerville Hall. ==Notes==