"Bryan Sykes" is a Professor of Human genetics/Human Genetics at the University of Oxford and a Fellow of Wolfson College, Oxford/Wolfson College.

Sykes published the first report on retrieving DNA from ancient bone (Nature (journal)/Nature, 1989). Sykes has been involved in a number of high-profile cases dealing with ancient DNA, including those of Ötzi the Iceman and Cheddar Man, and others concerning people claiming to be members of the Romanovs, the Russian royal family. His work also suggested a Florida accountant by the name of Tom Robinson was a direct descendant of Genghis Khan, a claim that was subsequently disproved.

More Bryan Sykes on Wikipedia.

If you didn't have that genealogical information, you wouldn't have the first idea about those two branches or where they come from.

If it's a single family with one original founder, then most of them will have the same Y chromosome fingerprint. If there's more than one, we'll identify that.

But generally this is the kind of name that, from experience, has one or very few founders.

We will select volunteers from those two branches.

There are several interesting questions such as was there one original 'father' Christmas or were there several different ones?