Complex sentence: He was born in Leicestershire, England, in 1909 and had two brothers who also played polo, Ivor Godfrey Balding and John Barnard "Barney" Balding.
Split into simpler sentences: He was born in Leicestershire, England, in 1909. He had two brothers who also played polo, Ivor Godfrey Balding and John Barnard "Barney" Balding.