 In 1945 he was appointed chief librarian of the city of Ghent.Thiery began writing under the pen-name Johan Daisne in 1935, with the publication of a collection of poetry entitled "Verzen".This was followed by other poetical works including "Het einde van een zomer " (1940), "Ikonakind" (1946), "Het kruid-aan-de-balk" (1953) and "De nacht komt gauw genoeg" (1961).