William Pargeter was an English physician, born in 1760. Nothing is known of his early life until he entered Oxford University in 1777. He graduated with a BA in 1781. Two years after graduating he moved to London and St Bartolomew's Hospital, where he remained until 1786. His Observations on Maniacal Disorders was published in 1792. While authors who owned private madhouses were concerned to demonstrate their cures, Pargeter had no such vested interest and was critical of the misconduct of madhouse keepers. He had little use for the elaborate systems of classification of his time. His book was a short  and practical. He was concerned to show that  a physician's manner could not only soothe and check developing excitement, but even prevent incipient madness.
He died in 1810.

 Stanley W. Jackson, "Introduction," in William Pargeter, Observations on Maniacal Disorders [Routledge,1988]
Richard Hunter, Ida Macalpine, Three Hundred Years of Psychiatry, [Carlisle Publishing, 1982] p.538