Thomas Joplin was born probably in 1790, although no record of his birth has been traced. He died at Böhmischdorf near Freiwaldau in Silesia on 12 April 1847. The family were timber merchants from County Durham, around a village called Satley, but had settled in Newcastle upon Tyne by the time of Joplin's birth. The difficulties encountered by Banks in Newcastle after 1815 naturally affected the business community, including Joplin; and it seems to have been one particular case of such difficulties, in which he was asked to act as guarantor for a bank, which led to the first edition of his On the General Principles and Present Practice of Banking, which appeared in 1822. It went through a number of editions subsequently, growing into a sort of manual for the establishment of joint stock Banks.
From The Biographical Dictionary of British Economists in Oxford Reference.