[1] After earning his Doctor of Medicine in 1773 at the University of Edinburgh, Parr served as Physician of the Devon and Exeter Hospital in southwest England.

In February 1775 he replaced Dr. Thomas Glass as Physician of the Devon and Exeter Hospital.

His proposers were Alexander Hamilton, James Hutton and Andrew Duncan, the elder.

His portrait, by William Mineard Bennett, is held by the Royal Devon and Exeter Hospital.

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