James Aspdin
c.1813 Born in Leeds, son of Joseph Aspdin
c.1838 Working as an book-keeper in Leeds
1841 James Aspden 25, cloth salesman, lived in Leeds with Louisa Aspden 20[1]
1841 His father took him into partnership as Joseph Aspdin and Son, cement makers at the Kirkgate in Leeds.
1848 James moved the business to a third site at Ings Road, Northfleet.
1871 James Aspden 57, cement manufacturer, lived in Wakefield with Louisa Aspden 50[2]
1873 Died in Wakefield[3]