Cornelius Thielmans (c. 1570–1634) was a Franciscan hagiographer from the Habsburg Netherlands.
He joined the Cologne province of the Franciscan order, and served as guardian of houses in 's-Hertogenbosch and Aachen, as definitor in Cologne, and as spiritual director to the Annunciate convent in Antwerp.
[1] Thielmans was one of the leading scholars in Brussels who published works that focused on the Franciscan literature.
[2] One of his works that has been documented was a 1622 print that depict a tree trunk genealogical design that emanates from the body of St. Francis and featured branches that included Anthony of Padua, Bonaventure, and Louis of Toulouse.
For instance, he translated the Latin works of Henricus Sedulius.