Complex sentence: John Trenchard (1662--17 December 1723), English writer and Commonwealthman, belonged to the same Dorset family as the Secretary of State Sir John Trenchard.
Split into simpler sentences: John Trenchard (1662--17 December 1723) was an English writer and Commonwealthman. He belonged to the same Dorset family as the Secretary of State Sir John Trenchard.