There are 5 titles associated with this person.

Griffith, Richard. The triumvirate: or, the authentic memoirs of Andrews, Beville, and Carewe. In two volumes. Dublin: James Hoey, Senior, Peter Wilson [Dame St, 1748–66], John Exshaw I [Dame Street], Sarah Cotter (later Stringer) [Skinner Row], Elizabeth Watts [m. Lynch in 1768], 1765.
Griffith, Elizabeth, and Richard Griffith. A Series of genuine letters between Henry and Frances. Volume III / Volume IV. London: William Johnston [Ludgate Street], 1766.
Griffin, Elizabeth, and Richard Griffith. Two Novels: In Letters. By the authors of Henry and Frances. In four volumes. London: Thomas Becket and P. A. De Hondt, 1769.
Griffith, Richard, and Elizabeth Griffin. Two Novels: In Letters. By the authors of Henry and Frances. In four volumes. Dublin: James Hoey, Senior, John Exshaw I [Dame Street], James Potts, James Williams [5 Skinner Row], Dillon Chamberlaine [Dame Street], William Sleater I [Castle Street], Peter Wilson [6 Dame Street], Henry Saunders [High Street], Hugh Boulter Grierson [Parliament Street], 1769.
Griffith, Richard, and Elizabeth Griffith. A Series of Genuine Letters, Between Henry and Frances. Volume V / Volume VI. London: William Johnston [Ludgate Street], 1770.