Complex sentence: Thomas Spencer (b.1852-d.1905) was born in Skipton, Yorkshire he was a former cashier from the wholesale company I.J Dewhirst (a knitting company founded by Issac Dewhirst) and joined Michael Marks in 1894 to form Marks and Spencer.
Split into simpler sentences: Thomas Spencer (b.1852-d.1905) was born in Skipton, Yorkshire. He was a cashier from the wholesale company I.J Dewhirst who joined Michael Marks in 1894 to form Marks and Spencer.