Dear Chris and others,
I just discovered this site tonight and definitely would like to help as much as I can.
As you can see from my name, I am a member of this family, and I am descendant of Gabriel Clarke in Antrim, and John Clarke and Anne Horsman.
I found this out in two steps, first being my father's first cousin George who years ago before DNA testing and the Internet established our line in Texas, Tennessee, North Carolina, and Pennsylvania back to Anthony Clark who first shows up in American records in the 1770's in a Mercersburg, Pennsylvania and was born in Antrim in 1739 (or perhaps 1749). Beyond that we knew nothing more about Anthony till very recently.
I joined Family DNA some years back and fortunately there is a Clark group there, including one member who is a direct descendant of Gabriel Clarke, named P. Clarke Glennon. My DNA is unquestionably matched to him and the others in that group, so there is no doubt I am a part of that family.
First off, here is Clarke's website with a good deal of information on Gabriel and the Quakers. I think it will help, but Clarke is not a descendant of William Clarke, my ancestor, rather Bartholomew. His line came to Pennsylvania also and is quite well documented. Clarke traveled to Antrim and gathered quite a bit of information from the Quakers there.
https://myglennonfamilyhistory.com/origins-of-the-clarke-family-of-east…
So unfortunately if you read Clarke's article there, you will see it's not completely clear how William Clarke exactly fits into the line of Gabriel - however, there is a documented Samuel Clarke who may likely be another son of Gabriel, and William may well be his son. But we know from the Autobiography of Adam Clarke, our cousin who was such a significant figure in the early Methodist Church among other very interesting pursuits, and who was also a descendant of Gabriel according to his information, that Adam was also a descendant of William Clarke and his son John, who married Anne Horsman. It would certainly be better to have more primary evidence/documentation on these lines than just Adam's autobiography, but there it is. Anthony Clarke and his son Anthony Clarke are also listed by Adam as one of the many sons of John Clarke and Anne Horsman, and given that info and the fact that my DNA is so close to Clarke Gennon's and the others, it seems extremely likely that the Anthony's listed there are my direct ancestors. It is also possible that within the current DNA structure we see that Samuel Clark might be Gabriel's brother? Or that William Clarke was a nephew and not a grandson? Again the DNA is so close, we can't be dealing with too much distance here. So it's not perfect in my case, but I see no reason to doubt Adam Clarke. Also there are records in PRONI that another Clark cousin has inspected not long ago, concerning John Clarke and Anne Horsman. That link is certainly established.
There are at least three known lines of Clarke's that came to America - Clarke Gennon's in Pennsylvania, mine briefly also in Pennsylvania and then North Carolina, and one to Maryland as well. We think that Gabriel Clarke came from the area of a village in west Yorkshire called Long Preston in Ribblesdale, but that is a bit provisionary.
There also is this branch that shows up a lot in online personal family trees that came to Massachusetts in the early 18th century as a part of the group overseen by William Boyd. To be honest I am not completely certain, for a number of reasons, especially some dating issues, that these Clark's are a part of our family. Unfortunately however they are probably the most visible online Clarke genealogies! I am not saying absolutely they are not, and I did try to see if there are any living members who might be able to take a DNA test to see if there is a match. Here is one online genealogy, which does claim the link. But others online have wildly unreliable dates that cannot be trusted.
https://www.geni.com/people/John-Clark/6000000002766549532
Link to Adam Clarke's Autobiography - page 5 has a long footnote concerning the genealogical information:
https://books.google.com/books?id=nnRmAAAAMAAJ&pg=PA3&dq=adam+clarke+au…
I have researched the Horsman family a great deal more, and there is much of interest there, including our apparent familial connection - if not strictly genetic, this is a complicate issue I am still researching and too complicated to go into here - with Sir Edward Waterhouse, who was among other offices secretary to Wiliam Sidney in Ireland. The Horsman's (and the Ingram's, more of our ancestors) were originally from Warwickshire. The Ingram's are documented well back into the Medieval period. Several of the Horsman family were Mayors of Carrickfergus. We also have a connection to the O'Cahan's, and some truly curious interactions with our cousin General Richard Kane, whose name was originally O'Cahan.
I think this enough for now. I would be happy to share more of what I have. I am really interested to see a member of the family in Australia - one thing I do not think anyone has pursued is how many of the family still are in Ireland, if any. The Quaker Meeting house was being maintained at least into the 1830's.
Let me know if you want my email for further information. Hope this all helps. The picture is not 100 pct clear but there is a lot of good info, mostly thanks to DNA testing, so that is reassuring. What is online in many published personal trees can be quite confusing, but I have worked through/around a lot of that.
Best,
Dennis Clark