John Clements Gregory was born in London in 1879 but his family emigrated to the United States when he was only 12 years old. He began his sculptural studies at the Art Students League in New York City and continued them at the École des Beaux-Arts in Paris and at the American Academy in Rome. At various times he studied with J. Massey Rhind, George Grey Barnard, Hermon MacNeil, Gutzon Borglum, Herbert Adams, and Antonin Mercié. He became a United States citizen in 1912 and during the First World War served in the camouflage section of the U.S. Navy.
In 1927 he was elected into the National Academy of Design as an Associate member and became a full Academician in 1934. In 1932 Gregory produced 9 marble bas reliefs for Paul Cret's Folger Shakespeare Library in Washington D.C. Each panel depicted a scene from a different play by Shakespeare.
Gregory is well known for his architectural sculpture. Examples include bas relief panels on the structure and sarcophagus of the Huntington Mausoleum by architect John Russell Pope at The Huntington Library in San Marino, California. In 1937, he completed a gilded bronze of Anthony Wayne, at the Philadelphia Museum of Art.
Gregory was a member of the National Sculpture Society, the American Federation of Arts, and the Beaux-Arts Institute of Design. He died in 1958.
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