Complex sentence: He subsequently switched to be'inspector of personnel' at the Francois Didot (1730-1804) paper-making factory in Essonnes which had a history going back to 1355, and supplied paper to the Ministry of Finance for printing currency.
Split into simpler sentences: He subsequently switched to be'inspector of personnel' at the Francois Didot paper-making factory in Essonnes. This factory had a history going back 1355, and supplied paper to the Ministry of Finance for printing currency.