Mervyn Patrick Wingfield, 9th Viscount Powerscourt

Mervyn Patrick Wingfield, 9th Viscount Powerscourt (22 August 1905 – 1973) was an Irish peer.
He was son of Mervyn Wingfield, 8th Viscount Powerscourt and Sybil Pleydell-Bouverie. He married Sheila Claude Beddington on 16 December 1932 in Jerusalem and They had three children, a daughter and two sons, Grania Langrishe, the heir Mervyn and Guy Wingfield.
The second world war had a huge impact on the family. Viscount Powerscourt served in the war and was captured by the Germans in Italy. When he came home his health had been compromised and he suffered from shell shock. Lady Powerscourt had taken the family to Bermuda. They returned home when he did. He came into his inheritance of the Powerscourt Estate in 1947. His marriage never recovered from the impact of the war. In 1963 his wife left and as a result of the financial impact the family sold Powerscourt Estate.

He was appointed the first Chief Scout of the Boy Scouts of Ireland (BSI) in 1949.