Complex sentence: Sir George Caswall was a British Member of Parliament who represented the Herefordshire seat of Leominster from 1717 to 1721, and from 1722 to 1741.
Split into simpler sentences: Sir George Caswall (died 1742) was a British Member of Parliament. He represented the Herefordshire seat of Leominster from 1717 to 1721, and from 1722 to 1741.