Michael Gregor (aircraft engineer)
Michael Gregor, born Mikheil Grigorashvili (Georgian: მიხეილ გრიგორაშვილი) or Mikhail Leontyevich Grigorashvili (Russian: Михаил Леонтьевич Григорашвили) (1888–1953) was an aircraft engineer of Georgian origin, one of the pioneering aviators in the Russian Empire, the United States, and Canada.