 In addition to Edward Paley , Sharpe took on other pupils , some of whom later established their own architectural practices . One of these was Thomas Austin ( 1822 – 67 ) , who joined Sharpe in 1841 and left in 1852 to set up his practice in Newcastle upon Tyne . Another pupil was John Douglas ( 1830 – 1911 ) , who created a successful practice in Chester . 
