About John P. Gray
Lived 1825 – 1886 (aged 61). John P. Gray was an American psychiatrist and physician.
John Perdue Gray (August 6, 1825, Halfmoon Township (Pennsylvania) - November 29, 1886, Utica, New York) was an American psychiatrist at the forefront of biological psychiatric theory during the 19th century.
He attended Dickinson College, then the University of Pennsylvania School of Medicine, where he received his medical diploma in 1848., He spent one year of further studies in Europe, then as a resident at Blockley Asylum in Philadelphia.
Works General Paresis, or Incomplete Progressive Paralysis. Albany, NY: Van Benthuysen, 1866. Insanity, its Dependence on Physical Disease. Utica, NY: Roberts, 1871. Insanity: its Frequency and Some of its Preventable Causes. Utica, NY, 1886. The United States vs. Charles J. Guiteau, Indicted for Murder of James A. Garfield, Twentieth President of the United States. Opinion of ... on the Sanity of the Prisoner. Washington, 1882.
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Frequently asked questions
Who was John P. Gray?
American psychiatrist
When was John P. Gray born?
John P. Gray was born on 6 August 1825 in Halfmoon Township.
When did John P. Gray die?
John P. Gray died on 29 November 1886 in Utica.
What was John P. Gray's occupation?
John P. Gray was a psychiatrist and physician.
What nationality was John P. Gray?
John P. Gray was American.
Sources & further reading
· DBpedia: John P. Gray (psychiatrist)
Cite this page
APA: Biography.guide. (2026). John P. Gray. https://biography.guide/john-p-gray-psychiatrist/
MLA: "John P. Gray." Biography.guide, https://biography.guide/john-p-gray-psychiatrist/.
Chicago: "John P. Gray." Biography.guide. https://biography.guide/john-p-gray-psychiatrist/.
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