Heribert Rosweyde (20 January 1569, Utrecht – 5 October 1629, Antwerp) was a Jesuit hagiographer. His work, quite unfinished, was taken up by Jean Bolland who systematized it, while broadening its perspective. This is the beginning of the association of the Bollandists. Life Most archival evidence indicates that Heibert Rosweyde was born in Utrecht on 20 January 1569. His family was part of the Catholic minority. Rosweyde attended the university of Douai, and entered the Society of Jesus in 1588. He became a professor of philosophy at the Jesuit college at Douai. Research Rosweyde devoted his leisure to the libraries of the monasteries of Hainaut and French Flanders. He copied with his own hand a vast number of documents relating to church history in general, and to hagiography in particular, and found in the old texts contained in the manuscripts coming under his observation quite a different flavour from that of the revisions to which many editors, notably the 16th century hagiographers, Lippomano and Surius, then the latest and most celebrated, had believed it necessary to subject them. Plan Rosweyde thought it would be a useful work to publish the texts in their original form. His superiors, to whom he submitted his plan in 1603, gave it their approval, and allowed him to prepare the projected edition, without, however, relieving him of other occupations. At that time Rosweyde was serving as prefect of studies in Antwerp, but was soon sent to St Omer to replace a professor of apologetics who had fallen ill. He did not return to Antwerp until 1606. There were about 1300 manuscripts regarding lives of the saints in the libraries of Belgium. Rosweyde obtained copies of most of them. He pursued his project, which he announced publicly in 1607, as well as the plan he proposed to follow. Under the title: Fasti sanctorum quorum vitae in belgicis bibliothecis manuscriptiae, he gave in a little volume in 16mo., published by the Plantin press at Antwerp, an alphabetical list of the names of the saints whose acts had been either found by him or called to his attention in old manuscript collections. This list filled fifty pages; the prefatory notice in which he indicates the character and arrangement of his work, as he had conceived it, takes up fourteen. Finally, the work contains an appendix of twenty-six pages containing the unpublished acts of the passion of the Cilician