Wow!
Once you get back to 1066 it all becomes easier ..... The Normans kept good records of their knights etc and can trace them back to the original Norsemen. I have got back now to 595 and a "King" of Norway.
Minor now wants to board a ferry and go to claim his throne!!
OK I admit I have had to jump from male to female line a few times .... but marriages back then were a matter of acquisition ~ either of lands or influence. I can now trace and prove a line that leads from a King of Norway born in 595 through to an agricultural labourer in Odiham born in 1860 (My mother's grandfather).
The family, on both sides, has displayed some nifty footwork changing sides twice during the Wars of the Roses, again under Henry VIII and again under Cromwell but somewhere they lost the lands and the money.
The most amazing thing, to me at least, is that since 1066 not a single one was born north of the M4 .... which I find most pleasing.