History of Anglo-Saxon England arrived at various points around the coast of England to fight the Sub-Roman British, and conquered their lands. The language of the migrants, Old English, came over the next few centuries to predominate throughout what is now England, at the expense of British Celtic and British Latin. The arrival of the Anglo-Saxons into Britain can be seen in the context of a general movement of Germanic peoples around Europe between the years 300 and 700, known as the Migration period (also called the Barbarian Invasions or Völkerwanderung). In the same period there were migrations of Britons to the Armorican peninsula
Proto-Germanic language of Proto-Indo-European and its gradual divergence into a separate language. As it is probable that the development of this sound shift spanned a considerable time (several centuries), Proto-Germanic cannot adequately be reconstructed as a simple node in a tree model but rather represents a phase of development that may span close to a thousand years. The end of the Common Germanic period is reached with the beginning of the Migration Period in the fourth century. The alternative term "Germanic parent language" may be used to include a larger scope of linguistic developments, spanning the Nordic Bronze Age and Pre-Roman Iron