JOHNSTONES OF JOHNSTONE,DUMFS

I am descended from a John Johnstone 1769-1806 who was a carter from Lockerbie to Edinburgh but lived in Johnstone where his children were baptised. A number of us have been looking for years for a house callled Blinburn stated as place of residence at his childrens' baptisms
!DEATH;Parish of Johnstone-register:F.H.L.film 918946
Monumental inscription relates details of death.also-"On the evening of the 25th ult. John Johnstone carrier from Edinburgh while returning from Lockerby to his home at Blinburn with his horse and cart was unfortunately lost in the River Annan near his own house - the cart body was thrown out near Applegarth Manse and the horse at Shillyhill. Daily search was made by multitudes for his
body: and it was found near to Jardine Hall on the 3rd.inst. He was respected as an honest man. Obituary from Dumfrieshire Weekly 9 Sept.1806.
Occupation-carrier between Edinburgh & Lockerbie.
My husband is also of Johnstone descent
John "of Mylnfield and Galabank"
George Johnston He married Agnes Graham and they had two sons and two daughters. They lived in a house in Annan, which showed their arms and initials over the door as late as 1776.George was Provost of Annan in 1646, and also Parliamentary Commissioner for the Dumfries Burghs in 1644,1646,and 1647 but he died the next year still under the age of 27. One of their daughters, Barbara married Lancelot Carlile in 1648.
Looking for further info on either family
Alison