The county historian George Lipscomb in 1847 noted that “a little plot of ground near the parsonage house of Ludgershall encompassed by a moat, is traditionally pointed out as King Ludd’s Hall.’ This is a moated site now, listed as an ancient monument, southwest of Ludgershall church.
Why it should have been called this is explained by Bishop White Kennett who had written in his Parochial Antiquities (1818). It is generally received that Brill was one of the seats of King Ludd, Luddswell, Ludslade, and now Ludgershall seeming to continue some part of his name’.
This was popular etymology with no basis in fact.Though Brill was indeed one of the Royal demesnes in Anglo-Saxon times neither it nor Ludgershall have any connection with King Ludd who appears in the mythical history of Britain of Geoffrey of Monmouth written c1136, and may himself be mythical.