This catalogue provides the interested public and scholars, with the content of the Llull Collection preserved in the Archive of the Marqueses of Barberà, in the castle of Vilassar de Dalt (Maresme). The Collection contains the documentation of the Llull lineage of Barcelona, from the 13th to the 17th century, with parchments and files of singular importance: the only known copy of the will of Blessed Ramon Llull and relevant references to the Luliana School in Barcelona. The inventory is preceded by an introduction that demonstrates, based on prosopography and genealogical analysis, how the Fund reached the current Marquises of Barberá and is accompanied by a glossary and analytical index.