It is said that all societies have their creation myth, or at least a myth of ancestry and origin. Thus before the coming of Christianity to Anglo Saxon England many of the kings traced their ancestry to the god Odin
It seems possible that the vast increase in the resources available for tracing our own family histories has done as much as scientific enlightenment to slacken the need to hold on to the Biblical myth of creation & the Protestant religion as an important element of notions of Britishness