It was then believed that an Anglo-Saxon town known as "Alvertune" developed. In Pierre de Langtoft's history of King Alfred he writes that in 865 it was the site of a number of battles between King Elfrid and his brother Alfred and five Danish kings and a similar number of earls. Later, in the 10th century, Danes settled at Romanby and Brompton. A fine example of English stonecarving from the period, the Brompton Hogbacks, can be found in Brompton Parish Church.