Complex sentence: Collier Twentyman Smithers (1867-7 December 1943) was a portrait, figure and rustic painter born in Buenos Aires, and the son of Arthur Edward Smithers a banker.
Split into simpler sentences: Collier Twentyman Smithers (born 1867-died 7 December 1943) was a portrait, figure and rustic painter. He was born in Buenos Aires, the son of Arthur Edward Smithers, a banker.