James Thomson went to work for Joseph Peel & Co. , calico printers in London , around 1795 .
James Thomson remained there for six years ; Joseph Peel was an uncle of Sir Robert Peel , 1st Baronet .
James Thomson went to work for Joseph Peel & Co. , calico printers in London , around 1795 , and remained there for six years ; Joseph Peel was an uncle of Sir Robert Peel , 1st Baronet .