Complex sentence: The De Beers moved to London in 1910 when Esmond's father Isidore was made manager of Hallensteins' London office, and in 1914 Esmond enrolled in New College, Oxford to read History.
Split into simpler sentences: The De Beers moved to London in 1910 when Esmond's father Isidore was made manager of Hallensteins' London office. He was educated at Mill Hill School Oxford Dictionary of National Biography and in 1914 Esmond enrolled in New College, Oxford to read History.