Using newly discovered materials, this article introduces readers to the career and poetry of Mir Zeyn al-Din ʿEshq, a now forgotten poet who was connected to many prominent political and literary figures in India during the eighteenth century. The primary source for the research is John Rylands Library, Persian MS. 219, a holograph copy of the poet’s divān, which he presented to John Macpherson, acting Governor-General of the Presidency of Fort William, in May 1785. The divān contains a considerable amount of contextual commentary which allows us to reconstruct Mir Zeyn al-Din’s biography and working practices, casting light on how his verse was produced and consumed. An Iranian émigré, he circulated throughout the Punjab, North India and Bengal, accompanying the Afghan ruler Ahmad Shāh Dorrāni on his Indian campaigns, participating in professional symposia with some of the leading literary personages of Delhi, Lucknow and Patna, and entering the ambit of colonialist British patrons in Kolkata.