As administrator of the Cyr/Sears DNA project: I feel I should share some of our combined research with you.
Perhaps all of you are aware that Sayre is the true surname of nearly everyone with the last name Sears or Cyr in North America.
In fact: searches for historical reference to Sears in Europe/Britain pre 1700 are nearly fruitless: very few: nearly everyone is recorded as a Saire,Sayer or Sayre
Sayre is actually a Flemish word: its a type of cloth. Thus: most who worked in the cloth trades: primarily weaving: but also as merchants took the surname Sayre.
Back in Flanders; its Le Sire.
What this generates for researchers is a bit of a mess: there are as many Sayre lineages as there are Smith, Baker or Taylor.
There are no less than 50 different original men to the Americas with some version of our surname. Around 20 in Virginia alone.
What I do wish to point out is that there are several DNA samples that are posted in the Sears and Cyr DNA project of lineages that are historically Sayres......and likely not in your project.
A new one showed up recently that is a proven Sayre/Sear of Leighton Buzzard for Joseph Sears of Virginia c. 1690
His DNA shows not the slightest resemeblance to Thomas Sayre.......though both have ancestors in the same town.
We probably have a 3rd sample also coming from Leighton.....that as well is not a match......its not entirely proven yet: but it looks very much like this is the missing DNA from Job Sayre: son of Francis of Leighton.
I dont know if its ever really been proven that Job Sayre is the brother of Thomas nor the son of Thomas.
That they share a common surname and town of origin we know from DNA means little.......there would be many Sayres in a town/region known for its lacemaking as Leighton Buzzard was....just as there would be many Bakers or Smiths or any of the trades.
I wanted to bring this information to your project: so that as we gain more Sears /Cyr samples: you can follow along ........assuming most if not all will turn out to be Sayres.......outside of the German Siers or the Irish Seers.