He was the son of James Park, a surgeon from
Edinburgh, and was brought up in Edinburgh until his father's practice moved to
Surrey. He was educated first at
Northampton Grammar School and then at
Lincoln's Inn. He was
called to the bar on 18 June 1784 and in 1787 published a
Treatise on the Law of Marine Insurance, which was reprinted six times during his life. That book drew much on the cases of
Lord Mansfield. It brought him a good practice. As an advocate, he made more of a reputation for persuasion than for eloquence. Park married Lucy, the daughter of Richard Atherton on 1 January 1791. His father-in-law was a woollen-draper in Preston, and a partner in the Preston Old Bank, when opened under the firm of Messrs. Atherton, Greaves, and Denison. In 1791, Park was appointed Vice-Chancellor of the
Duchy of Lancaster and in 1795 became a Recorder of Preston, seen as the first step towards becoming a judge. He became a
King's Counsel in 1799, Attorney General of the County Palatine of
Durham in 1802 and
Attorney-General of Lancaster in 1811. He was said to bear a striking physical resemblance to King
George III. This led to much gossip about his true paternity. He dismissed all such talk with the remark: "King George III was never in Scotland and my mother was never out of Scotland". ==References==