Genealogy of The Clan Gregor - 124, Delvorar kindred

[0] I checked the OPRs from Colquhoun (b.1740) back to Gregor (b~1615) without success, so there is no corroboration of any of this.
The reference[S37] in the quoted Peerage pages is to - Mosley, Charles, editor. Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes. Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003.
I looked at Debrett's peerage (1902) which only confirms the Baronetcy details up to the 3rd baronet
Then looked at Burke's peerage which includes up to the 5th baronet. Ancestral information on Burke's is exactly the same as on peerage.com with no reference to sources.
The additional relationships on this page (compared to 120) are taken from Dr Richard McGregor's interpretation of Judge John MacGregor's work in the SRO papers (see sketch at note 7)

[1] https://www.thepeerage.com/p50428.htm#i504278
Gregor MacGregor of Easter Drumnacharrie [Grigor MacGregor in Goularich] alleged son of John 'Dhu' MacGregor.
He married Christian McWilliam. He held Drumnacharrie and half Nether Urquhilare from John, Earl of Atholl.
He lived at Easter Drumnacharrie, Scotland, (Grigor MacGregor in Goularich.)

[2] https://www.thepeerage.com/p50428.htm#i504278
John MacGregor was the son of Gregor MacGregor and Christian McWilliam.
He married daughter of Farquharson of Auchenheyle, circa 1658 and gdau of John Couper of Blackchibrich.
He was fiar (owner of the fee simple) of Easter Drumnacharrie, known as Delavorar (or Dalrown) in Strathdown.

[6] Richard replied to Kat:
First of all there are monumental inscriptions for this family located in Kirkmichael parish church.
The line goes like this: John Dubh of Drumacharrie and Stronfearnan had a son Gregor who married Christian McWilliam, they had a son John (he had brothers) born about 1635 married 1658 Elizabeth Farquharson ( his patronymics are likely John McGregor Vc eandut Vc allaster). They had at least 5 boys and a girl Gregor (oig) b c 1668 d 1717 who married Marjorie Grant and had issue; James who was a witness in 1682 but no other onfoprmation; John born 1670 (about) known as Scorrach and married to Grant,; Alexander a witness in 1697 and dead by 1767, married to Janet Farquharson, Patrick (alias Gordon) born c1678 - no wife known but son Robert (Grant) McGregor who appears to have had children by three women (Isobel Grant, Janet McGregor and his wife Ann Grant - those you know), William Gordon the minister of Alvie born 1687 fied age 100, had two wives, no issue, eldest daughter Anne (c 1662 married William Farquharson). The names of the other daughters are unknown. Gregor Oig used the alias Grant and had various children .
From Kat:
My link from James the policeman to Charles was a process of elimination and piecing data together. I may very well have traced the wrong family, but my research was based on finding no other matches that even came close to the information I was able to get from the records I had found for the family in England. I used a variety of sources such as Army lists (got quite a collection now!), OPRs, National Archives and other repositories, and this is how I got there.............. James's recommendation to the police force in 1842 was by the Duke of Gordon who had inherited the Scottish estates by that time (and I have found various links to the family in the Goodwood Archives). On the same day as James joined the police was a John McPherson who I believe may be the son of Charles' sister Marjory from her second marriage to James McPherson of Torbain as he was also recommended by the Duke of Gordon. On James' marriage certificate (to Mary Ann Mitchell in 1846) he stated that he was born in Scotland and that his father was 'Charles, Captain in the Army'. In 1853 James left the Essex police force (he moved a lot as a policeman) to join the Land Transport Corps (LTC) which participated in the Crimean War. The Essex police museum were able to confirm that James' father's name was Charles and that James was born in Banffshire in 1821. As I said, in Charles McGregor's will he listed his sons as James, John and Peter. The only piece that troubled me was that 'James' actually appears in the OPR as 'John, illegimate son' but the parents and year of birth tally. The second son, or other John, was born a year later. As the entry of the first 'John' seemed a latter addition to the register I thought an error may have been made in the entry of the name. Of course the 1841 census doesn't help as a Peter and James (but no John) appear as 'AG labourers' with Robert McGregor at Delavorar, but both aged 15 (Peter is close enough in age but James should have been 20). However, none of this means that James was not indeed the son of James brother of Charles. Of course when all else fails the use of family names is a clue! James named his first daughter Isabella, maybe after the woman who raised him at Delavorar. While she was christened Isobel in the will and 1841 census she appeared as Isabella. I have asked for a search of the Goodwood Archive to determine if a letter to the Duke asking for his recommendation of young James exists, but I'm not hopeful. The only other avenue left to me in shoring up the connection is a trawl through the War Office archives at TNA. James's rank as given on his son Charles's marriage certificate was 'Superintendent' which I believe is a non-commissioned rank. This would entail going through muster rolls and then hoping that the service records are still somewhere. I should note that James 'disappeared' after 1953. No death record that I can locate and he doesn't appear in a census after this. His wife remarried in 1857, although I know this doesn't mean she was a widow even if she said she was! I have read that there were huge losses in the LTC due to disease, so maybe he lays on foreign soil. Anyway finding out more about James will need to wait until either I win the lottery (my piggy bank for research is just about spent!) or I can get over to the UK and continue looking. Thank you for the confirmation of Patrick. Is it likely that Campdellmore is the same as 'Camdel' as I have found a few links to this name. I had previously looked for a Patrick (Peter) Gordon but found nothing hopeful in the various records. I guess I need to do a more thorough search of Patrick Gordons now. Did he serve in the army or is there any other information on him (where/when born etc)? I guess it's all down to DNA now. Are there others claiming this line who can be compared against? That might make my relatives more keen to submit their sample!!

[7] Chart by Dr Richard McGregor based on Judge John MacGregor's research at SRO

Deposition by Patrick Grant McGrigor in Glenlochy from Grant Papers, SRO, Gordon Castle Muniments box39 bundle 16