Adrian Stephen, the son of Leslie Stephen and Julia Princep Duckworth, was born at Hyde Park Gate, Kensington, in October 1883. His mother had three children from a previous marriage: George Duckworth (1868–1934), Stella Duckworth (1869–1897), and Gerald Duckworth (1870–1937). Adrian had a brother and two sisters: Vanessa Stephen (1879), Thoby Stephen (1880) and