I am so delighted to see a reply to my discussion question of May, 2018. But of course, it is quite out-of-date. At that time I was just beginning my search into my Stewart family. So I was relying upon my cousin Brewer's research into it. This was the whole thing about Sir Charles Stewart of Tonderghie. I will explain that development below. In early 2018 I switched from most anything else in genealogy websites to just MyHeritage and Geni. My whole family had used MYFamily.com for 10 years owned by Ancestry.com. Then they required that we all switch to individual memberships on the site. Finally they cancelled MyFamily and stole all the family trees and photos we had posted there. That made me switch to Geni. Being the chief researcher since 1999 and Secretary for the Mendenhall Family Association since 2011, I started on Geni with the Mendenhall family, my chief Quaker ancestry. Right away a Geni curator, Anne Brannen, took me "under her wing" and helped me establish the Mendenhall trees on Geni in the correct way. I had to learn how to colaborate with others on Geni because it is their World Tree. Finally this past January, I took the familytreedna.com BigY700 test and received my subclade R-FT186473. That gave me my match from 800 years ago we believe and also a R-DF21 project provisional match to over 1500 years ago which is a bit similar to the ancient descent of the Stewarts of Scotland. Now I am admin for the FTydna Singleton project, I guess because of over 40 years of experience with it including living in England during the 1970s. But I have discovered that my maternal grandfather's mother's descent from David Stewart of Allegheny County, Pennsylvania is the biggest influence on my personal life as a Presbyterian. All my family have generally gone to a reformed Presbyterian college. My mom and dad worked tirelessly for the establishment of reformed Presbyterian churches throughout central Florida after we moved there in 1952 from Minnesota. So when my Presbyterian father married my VERY Presbyterian mother, that made us guess what? Mom had a ?x great uncle relationship with John Knox founder of the Presbyterian church of Scotland. He married a daughter of the Stewarts of Ochiltree from which we descend through those John Stewarts you mention and yes, Robert S. Stewart. So we are a Covenanter Presbyterian family. I found on Geni that already Lazarus was made a son of Sir Charles of Tonderghie. But there was a problem. Sir Charles and his son George, the immigrant, were not nearly as much Covenanters as Lazarus was. But Margaret Stewart the wife of Lazarus became a dedicated Covenanter you might expect when she married Lazarus. Then the curators from Geni deleted Sir Charles as the father of Lazarus and told me we would have to start all over searching for the father. They sent me a Geni curator named Eugene Thomas to help me. He had already helped me with my male maternal Brewer line and I found him to be a great help. So Eugene first went to the Stewart Clan magazine and posted their online url connection at the profile of Lazarus. Then he placed in the family Lazarus tree the rest of his 11 or 12 siblings. The sisters he just named "Daughter of". I was thankful for Eugene's help on that. Meanwhile I searched and searched for the father of all the siblings. Finally I found Robert S. Stewart born 1665-6 and already profiled on Geni. He seemed to be the match. His children all matched entirely with the siblings of Lazarus and the records placed in the overviews for Robert and his father John all attested to the large family of 12 which immigrated to Hanover, Paxtang, and Drumore Townships in the present Harrisburg area. Meanwhile the curators from Geni had disconnected the Charles Stewart line from Sir Robert Stewart of Culmore , Ulster, Ireland born 1588. Curator Anne Brannen told me I needed to prove the father-son relationship between Sir Robert and his reputed son George Stewart of Tonderghie, Scotland. Then I was besieged by several descendants of this "George Stewart" lineage to help them and find out how we could prove the link from Sir Robert to George. After a week I found a marriage record for George giving details of the special guests for the wedding of a Blair naming his sister as Elizabeth who married George Stewart of Tonderghie and Barclye: "◦Elizabeth, daughter of James Blair of Dunskey Castle married George Stewart of Tonderghie and of Barcly, Wigtownshire, (son of Sir Robert Stewart of Culmore, Governor of Derry[1643] Ireland)."
We got the connection down to Charles of Tonderghie again plus we got the wonderful complete story of the life of Sir Robert of Culmore. Then we found the property document stating that George Stewart of Donegal Township, PA b1683 was: "Feb 28, 1728/29: George Stewart requests the grant of about 500 acres or land below the fork of Sawatara creek, 200 acres for himself and 300 acres for his brother-in-law, Lazerus Stewart." (G245-SCM). So the wife of Lazarus, Margaret Stewart was from the Tonderghie Stewarts. That is where our connection to Sir Charles came from. So we connected all that line from Tonderghie and Barclye from Achibald down to George the immigrant b. about 1710 and then using the SC magazine, I posted on Geni the 4 Georges line: I, II, III, and IV. So then I connected Robert S. to the 12 Stewart siblings after I was reassured about the relationship primarily between Lazarus and his brother Samuel who came to western Pennsylvania in 1735 and settled in Drumore Twp. Then all the descendants of Samuel, Lazarus, brother Hugh, and the Tonderghie line to Col. George Stewart IV of the Revolutionary War were all happy with what was done. And the Geni curators were happy. (And now you too)
One day about a year ago I was looking at all those siblings, children of Robert S. and their birthdates. Eugene had them all as children of Mary Clark. Yet Mary was born in 1675!! How could she be the mother of those born to Robert from 1683-91? And Robert had a first wife named Nancy Moore about the same age as Robert. The first 6 siblings matched up with Nancy being their mother and those 3 sons immigrated to PA in about the same year, before 1729. The other 3 sons immigrated starting with Samuel in 1735. So I made it that way on Geni.com and I see now you agree with that. Thanks for answering the above discussion question. Anne Brannen taught me to post a discussion question first before changing anything big. Then if nobody replies for a week or two, if we think we have sufficient documentation, we can go ahead and make the changes. from Gary Allen Singleton