Gordon Campbell is Professor of Renaissance Studies at University of Leicester. His work on Milton includes a revised edition of W.R. Parker's two-volume life of Milton (OUP), the entries on Milton and his circle for the new Oxford Dictionary of National Biography, editions of Milton's Complete Poems and Complete English Poems (Everyman), a compilation of the Miltonic life records in A Milton Chronology (Macmillan), a collaborative edition of the poems of Edward King (Milton's Lycidas), and scores of articles in learned journals. In 2005 he was elected as the Honored Scholar of the Milton Society of America. Thomas Corns is Professor of English and Pro-Vice-Chancellor at the University of Wales, Bangor. His work on Milton includes The Development of Milton's Prose Style (Clarendon, 1982), Milton's Language (Blackwell, 1990), Uncloistered Virtue (OUP, 1992), Regaining 'Paradise Lost' (Longman, 1994), John Milton: The Prose Works (Twayne, 1998), A Companion to Milton (Blackwell, 2001) and the forthcoming Milton EncyclopediaM (under preparation for Yale University Press), of which he is editor-in-chief. He is secretary to the standing committee of the International Milton Symposium and founder and co-convenor of the British Milton Seminar. His Companion to Milton won the Irene Samuel Prize of the Milton Society of America for books published in 2001, and in 2003 he was elected as the Honored Scholar of the Milton Society of America. John Hale was until recently Associate Professor of English at University of Otago. His work on Milton includes Milton's Languages: The Impact of Multilingualism on Style (Cambridge University Press, 1997), an edition and translation of a substantial selection of Milton's Latin Writings (Medieval and Renaissance Text Society, 1999), a book on Milton's Cambridge University education, Milton's Cambridge Latin 1625-1632 (MRTS, 2005), and a collection entitled Milton as Multilingual: Selected Essays, 1982-2004 (Dunedin: English Department of the University of Otago), in which Part Five comprises four new essays on De Doctrina. John Hale has published widely on Milton's Latin, and is at present preparing a transcription and translation of the Miltonic De Doctrina Christiana manuscript for the Oxford edition of the Complete Works of Milton. Fiona Tweedie is an independent scholar who has taught in the Department of Statistics at University of Glasgow and the Department of Mathematics at University of Edinburgh. She is at present undertaking a degree in theology. Her work on stylometrics has long focussed on Milton's Latin, and she has published a number of seminal articles on author identification.