[1][2][nb 1] His eldest brother, Charles Henry Rolle Hepburn-Stuart-Forbes-Trefusis later the 20th Baron Clinton, received a large paternal inheritance in land of his own (albeit impoverished by mortgages and annuities to dependent relatives).

Rolle died childless and by his will made his wife's nephew, Mark Trefusis, his heir, as a life tenant in tail-male.

His two daughters were:[8] His heir under the tail-male of Lord Rolle's will was his nephew Charles John Robert Hepburn-Stuart-Forbes-Trefusis, 21st Baron Clinton (1863–1957),[10] who sold many of the estates to meet inheritance taxes.

He demolished the former house on the site in 1868 and built in its place between 1869 and 1873, to the plans of Charles Barry Jr., a huge mansion in the "Franco-Italian style".

[24] In 1860 he built the "National School" in St Giles in the Wood, with space for 220 children, and erected a reading room in the village.

He died without male issue, his heir to the Rolle estates, which were in tail-male, being his nephew Charles John Robert Hepburn-Stuart-Forbes-Trefusis, 21st Baron Clinton (1863–1957).

A Memorial Cross to Mark Rolle exists in the churchyard by the west door of St Michael's Church, Great Torrington, with the following inscription: "To the glory of God and in memory of the Honourable Mark George Kerr Rolle of Stevenstone, born 13th November 1835 died 27th April 1907 this cross was erected in grateful recognition of his life and character, his generosity and sterling worth, by the inhabitants of Great Torrington and neighbourhood in 1909 during the mayoralty of Milton Chapple" In 1870 he also gave to the town of Great Torrington the fountain and clock in the square.