In the year 1400 the Jagiellonian University in Cracow began its functioning. The author examined the origin, the course of studies and the subsequent careers of 206 students immatriculated in the first year. They came from the regions adjacent to Cracow. They were sons of burghers and noblemen, who, in part, already possessed ecclesiastical benefices and professions. Nineteen of the immatriculated completed their studies with the degree of 'baccalarius artium', three students later became professors at the University, among the others the most common occupation was a public notary (almost 10% of all immatriculated). The fortunes of many others remain unknown.