Louis Rosenhead was Professor and Head of the Department of Applied Mathematics at the University of Liverpool for a period of 40 years from 1933 to 1973, a record not easily equalled. Rosenhead’s father, Abram Haim Rozenkopf, was born on 23 September 1879 in Poland, did his national service in the Russian Army as a young man, and came to England as an immigrant in 1903. He became a British citizen by naturalization in 1925. Louis Rosenhead’s mother, Chaja Nogacz (or Ellen Nelson in the anglicized form that she later adopted) was born on 15 April 1884, and came to England as an immigrant in 1902. In fact, the father and mother came from neighbouring villages in Poland, and were married on 4 January 1905 in the Beth-Hamedrash Hagodel Synagogue in Hope Street, Leeds. The anglicized surname, Rosenhead, was presumably taken up at some stage after arrival in England; and after their marriage they were known as Abraham and Ellen Rosenhead. Abraham and Ellen had three children, Louis (1 January 1906), Michael (14 June 1912) and Esther Leah (26 May 1923). Louis was born at 4 Friendly Terrace, Mabgate, Leeds. His father died on 24 August 1935 in Leeds, and his mother on 23 February 1976.
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