Diana - thank you for posting this additional information concerning John Allen.Some years ago I had noted Stella Buchanan's application as the possible source of the name Peter, but did not have the entire text which you have now provided.Below I will add some comments concerning John Allen's name, and also point out some discrepancies in the DAR data you have quoted.In my records, I call this John Allen "John Allen Sr.", to distinguish him from his son John, but I will dispense with the Sr. in my remarks below.
First, when it comes to determining the given name of John Allen, the RW vet b. ca. 1743 and said to have d. 8 Jun 1822 (whose children included James Allen who mar. Mary Woodruff - my line), it seems to me that the DAR application no. 344891 of Stella Allen Buchanan may be the source of the given name Peter.However, her application apparently gives the name Peter in parentheses, which may have been Ms. Buchanan's way of saying that she had found John Allen listed as Peter Allen in some records, so Peter Allen is a possible alternate name for John Allen.Perhaps Ms. Buchanan found a record which unquestionably referred to John Allen, but used the name Peter Allen instead - I would assume that if Ms. Buchanan had actually found a record which used the name John Peter Allen, she would not have used parentheses to enclose Peter.If John Allen had been called Peter Allen in a record, perhaps Peter was John Allen's middle name, or perhaps Peter was John Allen's first name and John was his middle name, or perhaps John Allen had no other given name than John and the name Peter was the result of a clerical or typographical error in a record concerning John Allen.It seems unlikely to me that Ms. Buchanan was using the parentheses to say that John Allen's father was named Peter.It also seems unlikely to me that "Peter" was simply John Allen's nickname.So far as I know, the given name Peter was not used in the Allen family, so I have no explanation for the use of (or the validity of) the name Peter as applied to John Allen.His commanding officer in the Rev. War happened to be Capt. Peter Gray.
My guess is that any later books which list John Allen as John Peter Allen are simply using the name from Ms. Buchanan's DAR application, but have omitted the parentheses around Peter which Ms. Buchanan used.
Does anyone related to Ms. Buchanan have access to her working data, so that perhaps we could learn the truth about the source of this name Peter?
I noticed two discrepancies in the DAR data quoted.First, John Allen's place of birth is given as Surry Co. SC in the DAR data quoted; I have seen it given elsewhere as Rowan Co. NC.As there was never a Surry Co. in SC, I assume that Surry Co. NC was meant.I would point out that John Allen was born around 1743 and Surry Co. was not formed until 1770.Here is the text of a note concerning this subject which I have in my records: "John Allen Sr. said to be b. 1743 in Surry Co. NC or Rowan Co. NC (perhaps per RW pension or service records); since Surry was formed 1770 from Rowan, and Rowan was not formed from Anson until 1753, and Anson from old Bladen in 1750, John Allen may have actually been born in what was then Bladen Co. NC; John's son James Allen was said to have been born in Surry Co. in the Yadkin Valley, so John may have also been born near or at the place of James' birth in 1776 (Surry Co. was formed from a northern part of Rowan in 1770, and the upper reaches of the Yadkin River are in Surry Co.); in 1850, Yadkin Co. was formed from the southern half of Surry Co., with the Yadkin River as the boundary between the two, so the modern location of John Allen's residence (and place of birth?) is probably either Surry or Yadkin Co."Some careful map study might clarify the actual location(s) in question, and then all one is left with is the persistent dilemma of deciding whether to list "then" or "now" locations in one's records.
Second, John Allen's date of death is given by Ms. Buchanan as 8 Jun 1822, but I believe the 8 Jun 1822 date is actually the date of John Allen's will, which can be found in Spartanburg Co. SC will book B, page 30 (box 1, pkg. 5); the transcription of this will is given in a number of places, and therein his will is dated 8 Jun 1822 and proved 15 May 1823.My records give his death date as 8 Dec 1822, age 79 but I do not have a source for this date.He is buried in the Bethel Bapt. Ch. cem. (Old Bethel) in Woodruff, Spartanburg Co. SC, but I do not have an image of his tombstone, if it is still standing.Perhaps older writings which deal with this cemetery would give the actual death date, or provide a picture of the tombstone from which a date could be read, or his death date may be given in the records of Bethel Bapt. Church or in estate settlement records etc.I do not have a burial location for his wife Elizabeth (Lindsey).Some sources give his wife's name as Mary Holland, but I think Mary Holland is either a 2nd wife, or an incorrect guess.
I hope this helps some fellow Allen researchers.If anyone else can help clarify some of these items, I'm sure many people would be interested.