This Mr. Morris does not seem to have been identified without a doubt. However, the editors of the London Journal suggested that he may be a Robert Morris, barrister, which seems plausible. If this is the case, they may be referring to a Mr. Robert Morris (b. ca. 1744, d. 1793), son of Robert Morris of Swansea. 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 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
- 1. Venn, J. A., comp. (1956) Alumni Cantabrigienses. London: Cambridge University Press, 1922-1954.
Life with Boswell:
Boswell was with Morris, "a young man of fortune and learning and worth, though uncouth manners", at Temple's on May 24, 1763.