Mervyn Richard Wingfield, 8th Viscount Powerscourt KP MVO (16 July 1880 – 21 March 1947)[1] was an Anglo-Irish peer.
[2][3] He was appointed Lord Lieutenant of Wicklow on 15 February 1910 and created a Knight of the Order of St Patrick on 18 April 1916.
[citation needed] In 1903, he married Sybil Pleydell-Bouverie: they had three children, including Mervyn Patrick Wingfield, 9th Viscount Powerscourt.
Lady Powerscourt served as the Girl Guides Deputy Chief Commissioner for Ireland.
He is a great-grandfather of Sarah, Duchess of York through her mother Susan Barrantes, who is Powerscourt's granddaughter.