Complex sentence: Development came only at the end of the century, when the grandson of the founder, Jenő Farkasházy, became the owner of the factory, who was a trained ceramist, who gained experience in foreign factories and wanted to follow the founder's concepts.
Split into simpler sentences: Development came only at the end of the century, when the grandson of the founder, Jeno Farkasházy, became the owner of the factory. Jeno Farkasházy was a trained ceramist, who gained experience in foreign factories and wanted to follow the founder's concepts.