Complex sentence: J.E. Glénisson studied in Saint Omer (France) and came to work afterwards in the Brepols factory of his uncle in Turnhout, in 1830, he was promoted to first clerk.
Split into simpler sentences: J.E. Glénisson studied in Saint Omer (France) and came to work afterwards in the Brepols factory of his uncle in Turnhout. In 1830, he was promoted to first clerk.