What nationality are the Anglo-Saxons from?

The British are AngloSaxon, a branch of Germanic people, who originally lived in jutland, the Danish Islands and the northwest coast of Germany, commonly known as West Germanic people.

The word Anglo-Saxon comes from Alfred the Great's classical literature. In documents, he seems to often use the names of rexAnglorumSaxonum or rexAngul-Saxonum. The meaning of the old English words aenglisc and Angelcynn ("angle-kin", gensAnglorum) has been proved to be different from its original meaning, that is, it refers exclusively to the Angles, excluding the Saxons. Early records show that they refer to western Europeans who immigrated to England after the fifth century.