sentences:  He was a leading Virginia attorney and lawyer to George Washington, as well as a colonial prosecutor for the King's court of Virginia.He authored "Dinwiddianae" (4 November 1754 – 3 May 1757; also known as "The Dinwiddianae Poems and Prose"), plus "Abridgement of the Public Acts" (1737; "An Exact Abridgment of the Public Acts of the Assembly of Virginia"), "First Code of Virginia 
  Laws" (1759), and "Abridgment of Virginia Laws" ("Mercer's Abridgement of the Laws of Virginia").Mercer was also a founding member, secretary and general counsel of the Ohio Company of Virginia, a land speculating company that had George Washington as a member.