Henry Edward Yelverton, 19th Baron Grey de Ruthyn (8 September 1780 – 29 October 1810) was a British peer. He was a tenant and sometime friend of Lord Byron.
The title of Baron Grey de Ruthyn had a long history and had belonged to the Earl of Kent for a period. It passed to the Earl of Sussex from 1717, the Yelvertons. Henry Yelverton, 18th Baron Grey de Ruthyn, 3rd Earl of Sussex died in 1799, with no sons. The Grey de Ruthyn title therefore passed to 19-year-old Henry, son of the Earl's daughter, Lady Barbara Yelverton (who had died in 1781) and her husband, Edward Thoroton Gould, who was the grandson of Robert Thoroton Esq. of Screveton Hall, Flintham, Nottinghamshire. The younger Yelverton could not inherit the title of Earl of Sussex through his mother.
Lord Grey took his seat in the House of Lords as a Whig.
On 21 June 1809, he married Anna Maria Kelham, daughter of William Kelham, of Ryton-upon-Dunsmore, Warwick. Byron wrote from his European trip to his mother: "So Lord G— is married to a rustic. Well done! If I wed, I will bring home a Sultana, with half a dozen cities for a dowry, and reconcile you to an Ottoman daughter-in-law, with a bushel of pearls not larger than ostrich eggs, or smaller than walnuts."
The couple had one daughter, Barbara, born on 20 May 1810 (later Barbara Rawdon-Hastings, Marchioness of Hastings). In October of the same year, Grey died at his seat of Brandon House, near Coventry, aged 30.
Lord Byron had inherited Newstead Abbey with his title; the estate was leased to Lord Grey, from January 1803, until Byron came of age. Later that year, Byron stayed at Newstead Abbey for the summer whilst Grey was traveling abroad. When Grey returned, Byron stayed on, not returning for the Autumn term at Harrow. He and Grey became friends, spending their days and nights on shooting expeditions. Then Byron suddenly broke off their friendship and left Newstead.