Career
Jean d'Oisy (alternatively called Jehan d'Oisy, Jan van Osy) (1310–1377) was the architect of several ecclesiastical buildings in Brabantine Gothic style. D'Oisy was born in Valenciennes. Sources occasionally call him French or a Frenchman, or say that he was from Hainaut, which is currently a province in the Walloon Region of Belgium.
His birthplace, now in the département Nord in France, was in the County of Hainaut and had belonged to the Holy Roman Empire, though since 1285 it had used French currency. In Jean d'Oisy's lifetime, the county formed personal unions with the County of Holland (1299–1436) and with Bavaria-Straubing (1356–1417). He died in Brussels. He is noted for (parts of):
St. Rumbold's Cathedral in Mechelen (from 1335, 1342-1375)
Possibly the Saint Martin's Basilica in Halle (1341–1377) (Also Jacob van Thienen gets mentioned)
Church of Our Lady-at-the-Pool in Tienen (1358–1375).