Mike,
First of all let me tell you how much I appreciate your thoughts and information regarding Alexander Montgomery. You have obviously devoted a lot of research and time to this subject and helped sort out the many different lines of this Montgomery clan!
I would like to start with John Montgomery (1764- 1845), brother of Alexander Montgomery who were sons of Alexander Montgomery and Martha Walker. One general source I use is The Montgomery Family book by Magoffin County Historical Society, Salyersville, Kentucky.
Johns service record is A079041 (S33124-SAR service record) on the DAR list where it shows he served as a Private in Virginia under Captains John Snoddy, Dazy and Col. William Campbell. He enlisted as a Private in June of 1977 (13 years of age) for 5 years of service. John and his brother Alexander listed under Captain Nathan Reed. He was placed under Captain John Snoddy at Moores Fort, Washington County, VA. He served in the 7th regiment for the Virginia line. He was in a skirmish at Whitsells Mill and was in the battle of Guilford Court House. His father, Alexander Montgomery was also stationed at Moores Fort. He is listed on page 430 in the Graves book of the National Society of the Sons of the American Revolution.
Parke County, indiana
-On this 12th day of September, 1832, personally appeared before me John R Porter Circuit Judge of the first Judicial Court of said State and in which Circuit is comprised said county, and before us Robert Mitchell and Eliphalet Allen Associate Judges in and for the Circuit Court of said County, John Montgomery a resident of Sugar Creek township in the county aforesaid aged sixty eight years one month and seven days, who being first duly sworn according to law, doth on his oath, make the following declaration, in order to obtain the benefit of the provision made by the act of Congress passed June 7, 1822. That he enlisted in the Army of the United States in the year 1777, by Thomas Quirk who was recruiting officer under Nathan Reed (Captain), and he said Montgomery was placed under Capt. John Snoddy until he would be called upon by said Reed to march in the Continental Service (said Snoddy was Captain at Moores Fort in the then Washington County, State of Virginia). Said Montgomery when he marched into the Continental service he served in the 7th regiment of the Viriginia line under the following named Officers, to wit, ___Niel, his first name not recollected, and instead of marching in said service under Reid, he marched and served under Capt. James Dosey, or Dozzard (the precise sound of the name not recollected), his Major was David Ward, his colonel was William Campbell. –said Montgomery when he enlisted as aforesaid enlisted for five years, and he thinks he enlisted some time in the month of June of said year and was discharged at the expiration of said five years, and served out one term of enlistment ending in some time in the year 1782. When he enlisted he resided in said Moores Fort Washington County, State of Virginia, he marched from said Fort the spring after he enlisted about 25 mile to Abbington, in the county of Washington, State of Virginia where he remained under Capt. Dosey until he marched to the Guilford Battle in which he was engaged (but a few days before that engagement he was engaged in a skirmish at Whitrell Mills), after said Guilford battle he was sent back to Moores Fort and placed under Capt. Snoddy where he remained until he was discharged as above mentioned.