'Haggerston' may recall a Saxon farmer called Hærgod.
It is first recorded in the Domesday Book of 1086 as Hergotestane: either Hærgod's tun, or farmstead, or the stone that marked the boundary of his land. Rocque's map of 1745 shows it as Agostone; by the 19th century it was Haggerstone. The first station, opened in 1867, was to have been called De Beauvoir Town.