Sacred/ to the memory of/ Doctor Robert Johnston/ who departed this life/ on the 25th Nov 1808/ aged 58 years, 4 months/ and 4 days. Born on the 21 of July 1750, Dr. Johnston became one of the most prominent surgeons of the Rev era. He was appointed surgeon of the Sixth Penn'a Battalion, Col. William Irvine, January 16, 1774, and continued in service until 1781, when he was ordered by the commander-in-chief to leave the regimental service and assist the wounded officers and soldiers of the American army, prisoners in the British hospital at Charleston S.C. He was a member of the Society of the Cincinnati, and retained the friendship of his fellow officers during life, many of whom sought his medical advice and skill long after his professional retirement. During the so-called Whiskey Insurrection in 1794, Ge. Washington and the members of his staff were the guests of Dr. Johnston, the President going out of his way to meet his old friend.
[Egle's Notes & Queries, 1st & 2nd Ser., Vol. 1]

Sacred/ to the memory of/ Doctor Robert Johnston/ who departed this life/ on the 25th Nov 1808/ aged 58 years, 4 months/ and 4 days. Born on the 21 of July 1750, Dr. Johnston became one of the most prominent surgeons of the Rev era. He was appointed surgeon of the Sixth Penn'a Battalion, Col. William Irvine, January 16, 1774, and continued in service until 1781, when he was ordered by the commander-in-chief to leave the regimental service and assist the wounded officers and soldiers of the American army, prisoners in the British hospital at Charleston S.C. He was a member of the Society of the Cincinnati, and retained the friendship of his fellow officers during life, many of whom sought his medical advice and skill long after his professional retirement. During the so-called Whiskey Insurrection in 1794, Ge. Washington and the members of his staff were the guests of Dr. Johnston, the President going out of his way to meet his old friend.
[Egle's Notes & Queries, 1st & 2nd Ser., Vol. 1]