Complex sentence: Originally known as Dennis Brothers Ltd, the company was founded in 1895 by John (1871--1939) and Raymond (1878--1939) Dennis who made Speed King bicycles Wise, David Burgess.
Split into simpler sentences: Originally known as Dennis Brothers Ltd, the company was founded in 1895 by John (1871--1939) and Raymond Dennis (1878--1939). The brothers who made Speed King bicycles Wise, David Burgess.