Duke of Kent suffers mild stroke - Buckingham Palace
The Queen's cousin, the Duke of Kent, has suffered a "mild stroke", Buckingham Palace has said.
The 77-year-old was taken to an undisclosed London hospital in the early hours of Monday, where he was treated, the palace added.
A Buckingham Palace spokesman said: "He's still being assessed and it's not thought to be serious."
He said the duke was "feeling well and looking forward to resuming official engagements as soon as possible".
The duke is the son of the late Prince George, the fourth son of the Queen's grandfather King George V.
The duke inherited his title following the early death of his father in a plane crash in 1942.
He is best known as president of the All England Lawn Tennis and Croquet Club and presents the Wimbledon trophies each summer.
He is also president of charity the Stroke Association for the past 20 years. Its chief executive Jon Barrick said he was "deeply saddened" to learn of the duke's stroke.
He added: "Our thoughts are with him and his family and we wish him a very speedy recovery.
"He has shown tremendous support and dedication to our cause and hosted a number of high profile events."
The duke opened the charity's Life After Stroke Centre in Bromsgrove in 2012.
Prince Edward had a distinguished military career, serving as a British army officer for two decades.
He unveiled a new memorial in Portsmouth to the casualties of World War I in February in his role as president of the Commonwealth War Graves Commission.