There is a debate between historians,
geneticists and others about the extent to which historical changes in the culture of the British Isles corresponds to historical migration events of
Germanic tribes, and to the extent of these migrations. The traditional view of historians, based on contemporary accounts and linguistic evidence, was that the English are primarily descended from the
Anglo-Saxons, the term used to describe the various
Germanic tribes that migrated to the island of
Great Britainfollowing the end of the
Roman occupation of Britain, with assimilation of later migrants such as the Norse
Vikings and
Normans.
This belief is now regarded by many historians as incorrect, on the basis of more recent
genetic and archaeological research. Based on a re-estimation of the number of settlers, some have taken the view that it is highly unlikely that the British Celtic-speaking population was substantially displaced by the Anglo-Saxons and that instead a process of acculturation took place, with an Anglo-Saxon ruling elite imposing their culture on the local populations.
[27][28] Research into the
genetic history of the British Isles, conducted by
Stephen Oppenheimer in 2007 appears to support this theory, not showing a clear dividing line between the English and their 'Celtic' neighbours but a gradual
clinal change from west coast Britain to east coast Britain, originating from upper palaeolithic and Mesolithic era variations in a pre-Indo-European population, which Oppenheimer argues form the basis of the modern population of the British Isles rather than Germanic tribes or Celts.
[29][30] More recent genetic studies of ancient British DNA have refuted the hypothesis that the Anglo-Saxon invaders formed an elite class largely separate from the indigenous population, finding that samples from culturally Anglo-Saxon graveyards contained individuals who were more Celtic, suggesting a high level of intermingling between the Anglo-Saxons and the native Britons. [wikipedia , english people]