Robert C. O'Brien (author)

Robert C. O'Brien
Born	Robert Leslie Carroll Conly (1918-01-11)January 11, 1918 Brooklyn, New York, U.S.
Died	March 5, 1973(1973-03-05) (aged 55) Washington, D.C.
Pen name	Robert C. O'Brien
Occupation	Writer author journalist
Nationality	American
Education	Bachelor of Arts in English
Alma mater	University of Rochester
Period	1968–73
Genre	Children's literature, fantasy, science fiction
Notable works	Mrs. Frisby and the Rats of NIMH Z for Zachariah
Notable awards	Newbery Medal 1972
Spouse	Sally McCaslin ​ (m. 1943)​
Children	4, including Jane Leslie Conly

Robert Leslie Carroll Conly (January 11, 1918 – March 5, 1973), better known by his pen name Robert C. O'Brien, was an American novelist and a journalist for National Geographic magazine. He is best known for his novels Mrs. Frisby and the Rats of NIMH (1971) and Z for Zachariah (1974), with the former was adapted to the animated film The Secret of NIMH (1982) directed by Don Bluth.