He wrote at least one legal textbook, "Coppinger's Abridgment". He was described as a man of heavy build, quiet and reserved in manner. He was notably extravagant in his manner of living, being described as a man who could not exist without a comfortable income. He sold Glenville in the 1770s: this may have been because his wife, after several years of marriage, had still not produced a male heir, but it is more likely that he needed money to pay the costs of a protracted lawsuit against him by Theobald Wolfe and William Alcock, which resulted in a Court
decree against him in 1778, requiring him to pay heavy damages. The decree was said to have left him virtually
bankrupt, and certainly, he was greatly troubled by financial worries in later life. He and his wife had one son, John James Coppinger (1780–1813), who became a
Church of Ireland clergyman. His Dublin house was on South William Street, and nearby Coppinger Row was named after him. He died in 1802: his wife Anne Mitchell, who was an aunt of the distinguished Army officer Colonel
Hugh Henry Mitchell, survived him. In 1785 she was granted a Government
pension of £300 a year, to alleviate the family's permanent financial woes. ==References==