he Danes by this time had formed settlements in Ireland as well as England, and we are told that one of their kings, named Anlaff, whom some think to be identical with Anlaff, the son of Sithric, others a different person, arrived from Ireland with many ships, and was joined by Owen of Cumberland, and Constantine, the king of the Scots. According to a late, and not very trustworthy, account of the campaign, it would appear that it was arranged so secretly that Anlaff entered the Humber with a fleet of six hundred sail, and invaded Northumbria before Athelstan had any intelligence of his landing; and with such forces, and the assistance of the Danes settled there, he easily became master of several small ill-guarded towns.