Sir Francis Knollys Your 11th great grandfather Birth 1514 in Rotherford Greys, Oxfordshire, England Death 19 Jul 1596 in Rotherford Grey?

If you are talking about the overall testing, the results usually vary between company as the only thing companies can do is match you with population samples in their database. So if one company does not have or is deficient in certain population samples another has and vice versa, the result will not be the same. The best company to use is the one that has the population samples that best match your ancestry and there is no way we or even you can know that.

The best company can be different for different people. They use the Autosomal DNA along with the X and it is more complicated than Y & Mitochondria which is respected as being very exact. The reason they don't use Y & Mitochondrial if you are a male you got each from only one person in each generation you go back.

Get back to your 32 great great great grandparents and 30 of them will be excluded from the results. If you are a female you normally got Mitochondrial only from one person in each generation you go back. That means 31 of them will be excluded from your 32 great great great grandparents.

You got Autosomal 50-50 from each parent but when your parents passed on the Autosomal they received from their parents to you it went through "meiosis" where it was randomly jumbled and recombined. So while you got 50% from your mother's side and 50% from your father's, there usually will be a bias in what you inherited from grandmother and grandfather on both sides of the family. How you inherited any bias will not be how your siblings inherited it unless you have an identical twin.

Therefore if you and a full sibling were tested by the same company at the same time the results will not be exact. Example: You might have received more Scandinavian Autosomal from a Norwegian grandfather and your brother or sister might have received more Iberian Autosomal from a Spanish grandmother. The real value of genealogy DNA testing is if you are into traditional genealogy work using documents/records and if the company you choose has cousins of yours going back several generations in their database and they are allowed to notify you of those cousins and you make contact with them and they are also into traditional genealogy work, you can collaborate information with them.

They might have discovered things you haven't and you might have discovered things they haven't. A lot of "ifs" involved but people have been successful in using genealogy testing that way. For males the X is a little different.

If you are a male you got X from your mother but she got X from her mother and her father. Whose X did you get? Your maternal grandmother's or your maternal grandfather's?

No definite pattern and it can differ among brothers who share the same mother.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.