Complex sentence: Educated at Eton College and Christ Church, Oxford, he was appointed a Teller of the Exchequer in 1764, and ten years later was returned to Parliament as one of the Members for Buckinghamshire.
Split into simpler sentences: Educated at Eton College and Christ Church, Oxford, George was appointed a Teller of the Exchequer in 1764. Ten years later, he was returned to Parliament as one of the Members for Buckinghamshire.