re: John Adair jnr, of 7th Regiment of Foot, c1778. Would his father also have been in the same regiment perhaps joining in NY or PA ?
7th (Royal Fusiliers) Regiment of Foot (Siege of Charleston, Cowpens) Revolutionary War: Arrived at Quebec in 1774 and was in the Montreal area in 1775. Captured during the Montgomery/Arnold operation in the Autumn of 1775 and remnants of unit in Canada drafted into 47th Foot.
In May 1777, a NEWLY-RAISED 7th Foot joined the British forces at New York with 18 officers and 287 enlisted men and served at PHILADELPHIA in the winter of 1777-8. In March 1778, it was reported at Philadelphia a strength of 19 officers and 293 enlisted men.
In November 1778 it was at New York with 269 rank and file where it remained until December 1779 when it moved to South Carolina with 385 rank and file.
It served during the siege of Charleston and, in September 1780 it reported a strength of 13 officers and 272 men with Cornwallis.
In January 1781 it was with Cornwallis with a strength of 167 rank and file. In September 1781 it was reported in Virginia with a strength of 203 rank and file. (John Adair lived in Augusta Co, VA). The 7th was at Cowpens and embarked for England in 1783.
The Royal Fusiliers Museum Her Majesty's Tower of London London, UK EC3N 4AB
Richard Cannon, Historical Record of the Seventh Regiment or The Royal Fusiliers to 1846. (London: Parker, Furnivall & Parker, 1847). Percy Groves, Historical Records of the 7th or Royal Regiment of Fusiliers, ... 1685 -1903. (Guernsey: Frederick B. Guerin, 1903).