Referred to only as Mr Morris by Boswell, he has later been identified as Robert Morris, barrister. Morris was the son of Robert Morris of Swansea, and he was admitted to Oriel College, Oxford in May 1760, from where he received his BA in 1764. He was admitted to Lincoln's Inn, near the lodgings of William Temple's lodgings, in January 1763, and was called to the bar in 1767.

According to Alumni Cantabrigienses he was "Advocate of Lord Baltimore in the memorable trial of his lordship for a rape on Miss Woodcock, which gained him the confidence and approbation of his Lordship, after whose death he carried off his patron's daughter, a ward of Chancery, and, although they were afterwards married in France and Italy, yet on their return to England, after two years' sojournment abroad, their union was dissolved by the lady's desire".1