Robertson was born c. 1768, he was licensed by the Presbytery of Lanark on 8 May 1795, when he was made assistant to Dr Meek, his predecessor.
His one publication, "Lay Preaching indefensible on Scriptural Principles," appeared in octavo form, in Glasgow, 1800 followed swiftly by a pamphlet rebutting criticism of his arguments.
The younger son, Alexander, became a "clerk" in the Glasgow Royal Infirmary, and later died from a wound he received while assisting at a dissection.
He had received his own post as minister from the Patronage of the Duke of Hamilton, so he may not have been in sympathy with those who left the Church on this issue.
Dr Robertson's assistant was the Rev William Bain - a versifier given to making fun of the church members.