Jack N. Mosseri (1884–1934) was a graduate of the University of Cambridge, a banker, and a member of an affluent and influential Sephardi family that settled in Egypt in the eighteenth century. Several members of the Mosseri family were vice-presidents of the communal council of Cairo, and Mosseri’s uncle, Moses (Moïse) Cattaoui (Qaṭṭāwī, 1850–1924), was the council’s head for many years. Jack Mosseri was himself a member of the Sephardi communal council and, until 1917, headed its school committee. He was also a member of Le Cercle National Juif, founded in March 1911, an undec…