three older brothers, Jan, Cornelius, and Claes. Adrian consistently signed with Adrianus Florentii or Adrianus de Traiecto ("Adrian of Utrecht") in later life, suggesting that his family did not yet have a surname but used patronymics only. Adrian was probably raised in a house on the corner of the Brandstraat and Oude Gracht that was owned by his grandfather Boudewijn (Boeyen, for short). His father, a carpenter and likely shipwright, died when Adrian was 10 years or younger. Adrian studied from a very young age under the Brethren of the Common Life, either at Zwolle or Deventer and was also a student of the Latin school (now Gymnasium Celeanum) in Zwolle. Leuven In June 1476, he started his studies at the University of Leuven, where he pursued philosophy, theology and Canon Law, thanks to a scholarship granted by Margaret of York, Duchess of Burgundy. In 1478 he had the title of Primus Philosophiae, as well as that of Magister Artium (that is, he took his undergraduate degree). In 1488 he was chosen by the Faculty of Arts to be their representative on the Council of the University. On 30 June 1490, Adrian was ordained a priest. After the regular 12 years of study, Adrian became a Doctor of Theology in 1491. He had been a teacher at the University since 1490, was chosen vice-chancellor of the university in 1493, and Dean of St. Peter's in 1498. In the latter function he was permanent vice-chancellor of the University and de facto in charge of hiring. His lectures were published, as recreated from his students' notes; among those who attended was the young Erasmus. Adrian offered him a professorate in 1502, but Erasmus refused. In November 1506 Margaret of Austria, Duchess of Savoy, became Governor of the Habsburg Netherlands and chose Adrian as her advisor. The next year Emperor Maximilian I appointed him also tutor to his seven-year-old grandson, and Margaret's nephew, who in 1519 became Emperor Charles V. By 1512 Adrian was Charles's advisor, and his court obligations were so time-consuming that he quit his positions at the university. Spain In 1515, Charles sent Adrian to Spain to convince his maternal grandfather, Ferdinand II of Aragon, that the Spanish lands should come under his rule, and not Charles's Spanish-born younger brother Ferdinand, whom his grandfather had in mind. Adrian succeeded in that just before Ferdinand's death in January 1516. Ferdinand of