I am very interested in this topic. Dean Mills and Jessie McCandless baker? oaktreegenealogies.com have covered a lot of ground here. These two researchers have tied Isaac who married a Frances to the Joshua Calvert and Deborah Harlan line. I believe this is a mixing of two or more lines of Calverts and cannot be true.
Keep in mind I have no proof of anything and I may be adding to the confusion of things. But I am looking in a similar veign to the same Isaac you are seeking.I just keep seeing gaping holes that just don't work logically. Accordingto RD Furlong's Genealogy of the Dulany furlong kindred families, the Thomas who m Anna Ewing is in my line. and his father, Isaac m a Frances(Fanny) see note on this later. This would mean that the father of my resin b 1805 and likely the resin of Belmont and MO who is likely b at deepwater is my line but not Joshua Calvert. Deepwater twp lies less than 20 miles from where our family farm was located...at the foot of a highland area known as Amarugia (Hgts). The other defunct resarch outfit was called Time Travelers and was Calvert run out of Wetsel WVA. It has a resin in the line behind Thomas. So I ask you if you know of any other information about a resin preceding the Resin who went to OH/MO(by any spelling). This second researcher has gaping holes as well, with a resin as father of a thomas Calvert b 1769-1784 who is documented in Hardesty's and so on. the researchers of your line put his father as Isaac who m a frances lnu. My Thomas was commissioned by WH Harrison w of 1812, ft. meigs and tippecanoe. It is unlikely that he was b 1769. however, he did marry Anna ewing. the researchers of the Isaac you are seeking have his bd as 1735 1742 or 1749. the apparent association of him with a thomas who m anna is possible if thomas was b1769. It is unlikely, but possible that this is the thomas of the w of 1812 was b 1769...considering when the chilren were born, or this is a second marriage started whenn he was nearing 40. The thomas of the w of 1812 had issue, among them, thomas(Clare) Calvert, Hugh Ewing Calvert b 1803 and 1805. TC is my line. his wife and all children born inVA. they used the name Colbert(I believe) in the counties that became WVA and in 1850 TC's wife hoh and Thomas gone, becomes a calvert in the census record. TC's son, Albert Gallatin was known to have been born in Monongalia co VA. That ties together with what you are stating. His Father, Thomas C. of W of 1812 came out of VA. Hugh Ewing (now u see the import of Anna Ewings maiden name had a son, Resin Calvert. Another researcher came upwith this line: 1702 Cecilius, 1735 Isaac who m a fanny, thomas b 1769 and Thomas C supposedly, b as issue.It also is incorrect. thereis nodoc on this Cecilius and JBC Nicklin felt that this line ended with Cecil. But: There is another Cecilius b c1718. No doubt this gets into the conjecture about the John and GA, Burr and alias Harrisons.
My point in posting this is I am also looking atthe same Isaac. I provide this conjecture: Isaac m fanny Frances Bullitt, DO Cuthbert bullitt. I have a bit on the records of this. It could be your isaac or mine but not the isaac of 1735. even for my understanding of what you are looking at, it is doubtful that Isaac had issue b in 1769 or 84.
I hope Dean Mills finds something because he is going to Greene Co PA in early summer. Put it this way. I don't know my Thomas BD. I know he m anna Ewing according to family records. I have documented both Hugh Ewing whoand his wife, sarah Ann Miller who had a son named resin. Hugh's father was my ancestors brother. I have photos of their gragestones. They are not of John of Armagh line rather out of MD via VA to WVA and points west. Further areas to consider: : Isaac may have ended up in KY not OH.
the other researcher was even more off base, attributing the ancestor of the thos. of w of 1812 to a Resin Calvert not an isaac.I found nothing on this. If you know of a resin b say between 1730 to 1776 please advise. At one point a few months ago, Dean, Jessie and I all exchanged info on roots or ancestry on this.
I don't mean to say I have answers. I believe there is an incorrect association of lineage on about 4 different people, including who the parent of resin was, which isaac, which Thomas and were Isaac thomas and Esekiel in 1810 census related to the md line or the the Joshua line.
Let me ask this in turn: Does your calvert heritage have any possible history of the quakers? if not, i am sure that the Isaac of Chester is not your isaac and you are in the same quandry as I. If my Isaac is the one in belmont co then well and good. If his son was thomas another plus. If thomas 2nd son is resin who went to OH and then migrated to Cass Co Mo, even better. I just doubt that the isaac to whom you refer can possibly be of the Joshua Calvert line due to the dates and gaps involved.
Lets hash this out...... a bit more. It may tell us where to look for records. Here is my line briefly:
Thomas 1769 - 84(C) M Anna Ewing. Thomas Clare b1803 m Elisabeth johnson(1830,40 COLB), 50. Albert Gallatin b 1830 m Mary A. (Polly) Cain John Ewing b 1856 m Martha Lemasters Arthur Clay b 1876 M3 Amanda Sylvesta Rose
Arthur is my grandfather(My mother is a calvert). Bottom line is i think there is a mixing of families here. 2 or 3 or more. due to what i can observe, i believe that this line is actually tied to the alias harrison saga. not proven, but it makes some degree of sense. So there may be your monkeywrench. again. I hope dean's on ground research yields something.