Magruder (October 19, 1911, Fort Riley, Kansas – January 19, 1982, Marathon, Florida) was an aircraft designer best known for his design of the Glenn L.
Martin Company's B-26 Marauder.
Magruder was also responsible for the design of the Martin B-10 and the Martin Model 146 (note, however, both of these attributions seem to be in error because the B-10's first flight was on February 16, 1932 when Magruder was only 20 years old and apparently still a midshipman at Annapolis and the Model 146's first flight was in 1935 - while Magruder didn't join Martin Company until 1937).