The fact of his printing the Opusculum Insolubilium, to be sold at Oxford 'apud J. T.', that is probably for John Thome the bookseller, points to his being at work about the year 1520. In 1521 he is believed to have issued an edition of Arnold's Chronicles, translated by Laurence Andrewe.
"A Short History of English Printing, 1476-1898"
Henry R. Plomer
What Marjorie Lindon could see in such an Opusculum surpassed my comprehension; especially when there was a man of my sort walking about, who adored the very ground she trod upon.
"The Beetle A Mystery"
Richard Marsh
On the whole subject the student may consult with profit Cajetan’s Opusculum de Nominum Analogia, published as an appendix to vol.
"Ontology or the Theory of Being"
Peter Coffey