The genetic composition of populations at specific times and places, the evidence of migration and mixing, the identification of individuals with specific ancestry profiles in specific contexts, all of this provides a new layer of evidence about how populations changed and moved.

The Norman Conquest is of particular interest in this context.

English historical and popular consciousness has long held the conquest as a defining transformation, the moment when an English-speaking, partly Scandinavian-influenced culture was overlaid by a French-speaking Norman ruling class.

But how much this political and cultural transformation was accompanied by significant population movement has been debated.

Ancient DNA studies of medieval English populations are beginning to provide genetic data on this question.

The evidence from individuals like Conquest Man, with substantial continental European ancestry buried in an English context in the immediate post-conquest period, contributes to a picture of genuine population mixing rather than simple cultural overlay.