The article introduces a manuscript organically related to the 1416 visit of King Sigismund to England that has so far been unknown in Hungarian scholarship, moreover, its iconographic evidence, i.e. its ink drawings have not been sufficiently investigated in the international Sigismund-historiography. On surface level the textual references and the iconographic representation provide evidence for the Anglo-Hungarian, Anglo-German relations of the early fifteenth century. On the other hand, it also shed light to the Anglo-Continental relations of the 1480s–90s, the reign of King Richard III (1483–85). The so-calledWarwick-, or Rous Roll, a Middle English codex attributed to the household genealogist of the earls of Warwick, John Rous, also has a Latin variant – the Lancastrian Roll – held at the College of Arms (the college of the Garter King of Arms, collegium armorum) in London. The Pageant has been dated to varying dates between 1483 and 1492, though most scholars agree that the most probable date is between 1483 and 1485, the reign of Richard III. The Rous Rolls are dated a bit earlier, to the late 1470s or early 1480s. The British Library Catalogue puts the English roll between 1483 and 1485. The Latin manuscript might be even made earlier, between 1477 and 1485. All three narratives report on the close and even intimate relationship between the earl and King Sigismund of Luxemburg of Hungary, but from the point of view of Hungarian memoriae regum the first one, the Beauchamp Pageant is the most significant since it has precious iconographic evidence on the political activity, the court and the entourage of King Sigismund and Queen Barbara during the Council of Constance. Beyond giving an overview of the manuscript, this study aims to investigate how and from where the author and illuminator could have learnt of and gathered information on the Hungarian relations of the earl and on what grounds the artist portrayed King Sigismund.