The only information that had been known about Gisbertus Carbo came from Vesalius, his friend. We know that he was a physician in Leuven and Vesalius gave him his first self constructed human skeleton. Our goal was to find as much additional material about him as we could. We looked, over approximately a year, at archives in Leuven and at some other sources. We found information about Carbo's university education, about his family, his address and his work and character. As a consequence Gisbertus Carbo becomes a little less unknown.