The Anglo-Saxons were a group of tribes from Germany, Denmark, and the Netherlands who migrated to Britain in the 5th century. They established kingdoms that eventually merged into what we now know as England. Anglo-Saxon mythology was heavily influenced by pagan beliefs and included deities such as Woden and Thor.As Christianity spread through Europe, Anglo-Saxon culture began to integrate Christian elements, and this period is often noted for the epic poem Beowulf, which features monsters such as Grendel.