The son of Bishop William Smyth, and of Mary Povey, daughter of Sir John Povey he was born in Raphoe and educated at Trinity College, Dublin. Smith was Archdeacon of Meath from 1732 until his death in 1759.
- National Librabry of Ireland Collection List No. 120 "Papers of the Family of Smyth of Barbavilla
- Alumni Dublinenses : a register of the students, graduates, professors and provosts of Trinity College in the University of Dublin (1593-1860)" Burtchaell, George Dames/Sadleir, Thomas Ulick (Eds) p785: Dublin, Alex Thom and Co, 1935
- ”Fasti ecclesiae Hibernicae : the succession of the prelates and members of the Cathedral bodies of Ireland Vol III” Cotton, H p129: Dublin, Hodges,1848