Marriage and children
In August 1706 Rolle married Isabella Charlotta Walter, daughter of Sir William Walter, 2nd Baronet, of Saresden, Oxfordshire. She brought with her a dowry of £1,500. His children was as follows:
Henry Rolle, 1st Baron Rolle (1708–1750), eldest son, MP, died childless.
John Rolle Walter (c.1714–1779), 2nd son, Tory MP for Exeter 1754–1776 and for Devon 1776–1779. He assumed the surname of Walter on succeeding to the estates of his maternal uncle.
William Rolle (1720-post 1747), 3rd son, of Beam, Great Torrington, whose will was dated 1747.
Denys Rolle (1725–1797), 4th son and eventual heir, of Hudscott, Stevenstone and Bicton in Devon and East Tytherley in Hampshire, an independent Member of Parliament for Barnstaple, Devon, between 1761 and 1774. He was the largest landowner in Devon, with a rent-roll of £40,000 per annum. His eldest son was John Rolle, 1st Baron Rolle (1751–1842).
Christiana Maria Rolle, eldest daughter, who married Henry Stevens of Winscott, Peters Marland, Devon.
Isabella Charlotte Rolle, 2nd daughter, wife of Robert Duke (d.pre-1785), the last male of the Duke family, lords of the manor of Otterton in Devon. The extensive lands of the Dukes, which adjoined the Rolle seat of Bicton in South Devon, were purchased in 1786 by Isabella's brother Denys. John's elder brother Robert Rolle (d.1726) had married Elizabeth Duke (born 1679), a daughter of Richard Duke (born 1653) of Otterton, Robert Duke's grandfather.
Letitia Rolle, 3rd daughter
Lucy Rolle (1715–1741)
Lucilla Rolle (1717–1741)
Anne Rolle (1721–1721), died an infant
Maria Philippa (1729–1730), died an infant