Born in Brooklyn, New York around 1912, the son of Charles and Constance Theresa Keough. He had earned a civil pilot's licence in America and was also a professional parachute jumper with over 500 jumps, performing at air shows across America.

He joined the French Air Force towards the end of the Battle of France, but as France fell he came to England with his friends and fellow Americans Andrew Mamedoff and Eugene Tobin and joined the Royal Air Force in 1940.

Keogh was the smallest pilot in the whole of the Royal Air Force, hence the nickname, and was just 4'10" (approx 1.47m) tall. He had to use two cushions in his Spitfire to see out of the cockpit.

Following Spitfire conversion training at 7 OTU Hawarden on 8 August 1940 he was posted to No 609 Squadron RAF at Middle Wallop airfield. He flew many missions during the height of the Battle of Britain in August and September. He was credited with one shared 'kill': Dornier Do 17 bomber shot down on 15 September with P/O Mike Appleby and Flt Lt John Dundas.

He was one of 11 American pilots who flew with RAF Fighter Command between 10 July and 31 October 1940, thereby qualifying for the Battle of Britain clasp to the 1939–45 campaign star.

He was posted to RAF Kirton in Lindsey in Lincolnshire on 18 September 1940 and was a founder member of No. 71 'Eagle' Squadron.



On 15 February 1941, Keogh was on a convoy-protection mission off Flamborough Head, East Yorkshire. During the chase of a Heinkel He 111, he was last seen spinning off into the sea. He may have been a victim of disorientation in cloud or oxygen failure. He was 29 years old. Killed in Action (KIA). His body was not recovered, but he is remembered on the Air Forces Memorial at Runnymede.