Sir Robert Sheffield, 5th Baronet (1823–1886) was a Royal Horse Guards officer, landowner, and High Sheriff of Lincolnshire.
Educated at Eton College and Christ Church, Oxford, in 1842 he purchased a commission as a cornet in the Royal Horse Guards. He was promoted, also by purchase, to lieutenant in 1845 and to captain in 1849. In 1861 he was granted brevet rank as a major, and he retired from the army later that year. On 7 November 1862 he inherited the Sheffield baronetcy and the Normanby Hall estate in Lincolnshire and became a Justice of the Peace. Sheffield was appointed a Deputy Lieutenant for Lincolnshire in 1852 and High Sheriff of the county in 1872.
Sheffield married Priscilla Isabel Laura Dumaresq, a daughter of Colonel Henry Dumaresq and Lady Elizabeth Sophia Butler-Danvers, grand-daughter of Brinsley Butler, 2nd Earl of Lanesborough, and they had one son and three daughters.
Gwendoline Sophia Alice (1869–1921), who married Lancelot Lowther, 6th Earl of Lonsdale, whose daughter Lady Marjorie Lowther married George Rodney, 8th Baron Rodney.
Helen (1872–1950)
Sir Berkeley Digby George (1876–1946)
Dorothy Marie Isolde (1878–1964)
Sheffield died in 1886.
