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According to Betham's Sketch Pedigrees, William Chambers and his son Roger Chambers split off from the Kilboyne Chambers in County Mayo. They settled in Cloverhill House in the mid-1700"s. It's located in Kilmacowen (Kilmacoen) near Sligo. Roger had seven children and it looks like succeeding generations also had many children. The family (descendants of first-born sons) can be found as late as the 1911 census in Kilmacowen. Cloverhill House no longer exists but a photo of it can be found in NUI Galway Landed Estates.
I am trying to prove that the Kilboyne House Chambers are not the main ancestors of the Chambers of County Mayo. My R1a-yDNA supports the theory that we came into Ireland as Redshanks from Macdonald lands. At the extremely rare yp1420 level, I have a match with a MacDonald. The final level below that, BY30235, has one match, Norwegian. Most of my matches, are Norwegian. So far, all the Chambers of County Mayo who have tested match me.
The Kilboyne House Chambers descend from the Hertfordshire Chambers. So far, one Hertfordshire test of a descendant of gentry came out as U106, a typical Anglo-Saxon, Northern German or Danish Haplotype.
I'm looking for a male Chambers descendant of the Chambers of Cloverhill, Kilmacowen, County Sligo who has taken a yDNA test so I can finish my research once and for all. I figure that there should be a minimum of 1000 living male descendants.

Thank you,
Tim Chambers

Update:

I previously posted that The Chambers of Sligo were Clan Cameron. That was from a 18th century document that Called Roger Chambers "Mr Chalmers". He was mistaken. Since then I have gotten a copy of Betham Sketch Pedigrees that show the Sligo Chambers are a branch of the Kilboyne Chambers in County Mayo. The Kilboyne Chambers descend from the Chambers In Hertfordshire according to a Grant of Arms awarded to Thomas Chambers of Kilboyne.
Since Roger Chambers is an unusual name in Connaught (none in Mayo) and family first names repeat, a Roger Chambers that emigrated to America in 1880 would be related (his father and son were also named Roger. A descendant has agreed to take a yDNA test. I anxiously await the results.
Tim

The results are in. The Tullynaskeagh Chambers (R1b) are not related to my Chambers family in County Mayo (R1a). It is interesting that they descend from the Ur Niall (Niall of the Nine Hostages, High King of Ireland).
A McCambridge also descends from Niall and matches the Tullynaskeagh Chambers. Since no Clan Cameron Chambers/Chalmers nor Norman Chambers nor English Chambers descend from Niall, it appears that it's the Tullynaskeagh Chambers that spawned from McCambridge/ MacAmbrois.
My search goes on.

Thanks JONMONASH
If you did the autosomal DNA test with Ancestry, i.e. the one that shows your ethnic background shown as percentages, then an R1a Haplotype Chambers would show some Eastern European and Norwegian in the mix.
If you did the yDNA test of your patrilineal line then I can tell the Haplotype from the first 12 markers. Typically, R1a starts with 13, 25, 15 (or 16) and the YCA IIa and YCA IIb would be 19 and 21 (Scandinavian R1a).

Scottish R1a comes from the Norwegian Vikings and can be found in all the Highland Clans. 25% of MacDonalds are R1a. R1a in the British Aisles is said to be positive proof of Viking ancestry.

Happymilly
Yes, it does help. Thank you very much!
If I'm descended from the Hertfordshire Chambers then there was a non-paternal event. ( a Viking in the woodpile).
If you were R1a, it would have settled the matter once and for all.
Tim