Sidney Lee, Dictionary of National Biography… (1891)
“ Robert Greene's contemptuous reference to Harvey and Harvey's father and two brothers in his ‘Quippe for an Upstart Courtier’ (1592) led to Gabriel Harvey's well-known defence of his family in his ‘Foure Letters’ (1592) . Gabriel describes John as ‘a proper toward man,’ ‘a skilful physician,’ and a M.D. of Cambridge, and mentions that he died, aged 29, shortly after returning to Lynn from Norwich in July 1592. He supplies a Latin epitaph. ‘John Harvey's Welcome to Robert Greene’ is the title of a sonnet included in Gabriel Harvey's ‘Foure Letters.’ Harvey published: 1. ”
