Following the Battle of Hastings, William the Conqueror marched on London, reaching as far as Southwark, but failed to get across London Bridge or to defeat the Londoners. He eventually crossed the River Thames at Wallingford, pillaging the land as he went. Rather than continuing the war, Edgar the Ætheling, Edwin of Mercia and Morcar of Northumbria surrendered at Berkhamsted. William granted the citizens of London a charter in 1075; the City was one of a few examples of the English retaining some authority. The City was not covered by the Domesday Book.