In 947 IC the northern lands were overrun by greenskin tribes, as well as Beastmen that poured forth from the Forest of Arden. Around this time, the Norse began to raid the northern coastal regions and the northern Bretonni tribes were isolated from each other and their lands ravaged. Three years later, Bastonne struck an alliance with Lyonesse through the wedding of Lord Thierulf and Rosalind, sister of Gilles le Breton. The Lord of Lyonesse and the heir to Bastonne became strong strong friends, and the ties between the two realms grew strong.[1h]