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George Harris Handasyde
c.1877 Born in Edinburgh
1908 Built his first aeroplane in North London
c.1921 Martinsyde closed
Hartasyde designed and built a commercial monoplane
Early 1930s: Joined Desoutter Aircraft Co; adapted the Dutch Koolhaven monoplane for British use.
Joined the British Klemm Aeroplane Co and adapted the Klemm monoplane.
The company became British Aircraft Manufacturing Co; Handasyde designed the Eagle and Double Eagle variants of the Klemm
c.1939 he retired to Scotland
1958 Died at age of 81