 During this time he was a member of the household of Pope Leo X, and around 1518 he was ordained as a priest.A further confusion, not definitively solved, is that music theorist and writer Vincenzo Galilei, father of the astronomer, included a "Lupus" from northern Europe in a list of distinguished musicians in the 1513 court of Leo X; however, Vincenzo was writing several decades later.By June 1518 Hellinck was probably in Ferrara, in the employ of Sigismondo d'Este (that this was the same "Lupus" has been disputed, but scholarly consensus is emerging that both composers named Lupus were the same); about a year later he returned to the Low Countries, and by October 1519 was back in Bruges, where he was again employed at St. Donatian.