 John Hammond was Physician to King James I and purchased Chertsey Abbey in Surrey in 1602.In 1607, whilst physician to the Prince of Wales, he was granted these arms by St George Norroy Herald, with the addition of a "canton azure charged with an ostrich feather in pale argent", being a reference to the Prince of Wales' badge.John Hammond's third son Thomas Hammond, of Byfleet, Surrey, was a judge and one of the regicides of King Charles I, whilst his younger brother was Rev.