After "The Good and the Bad" published in 1616, came, in 1618, "Essays and Characters of a Prison and Prisoners, by G. M. of Grayes Inn, Gent." G.M. signed his name in fullGeffray Minshulafter the Dedication to his uncle, Mr. Matthew Mainwaring of Nantwich, Cheshire, and he dates from the King's Bench Prison.