Of the more advanced writers of the Calixtine or Utraquist Church, Magister Jacobellus of Mies (or Střibro) is the most prominent. He became, immediately after the death of Hus, the leader of that party which adhered most closely to his teaching. He had already, during the captivity of his master, maintained the necessity of communion in two kinds, a doctrine which Hus had sanctioned in one of his letters.[54] Like most Bohemian divines of his time, Jacobellus wrote a Latin _Postilla_, as well as numerous other polemical treatises, both Latin and Bohemian. Some Bohemian hymns written by him have also been preserved, Jacobellus is, however, most worthy of notice as being the principal author of the celebrated _Articles of Prague_, that played so important a part in Bohemian history. After this event we find little mention of Jacobellus, and he died in retirement in 1429. Closely connected with Jacobellus is his friend the Englishman, Peter Payne,[55] whose name has already been mentioned. I have here no space to sketch out his adventurous career. He was obliged to fly from England, no doubt as being an adherent of Wycliffe, and settled in Bohemia, obtaining, in 1417, the degree of Master of Arts at the University of Prague. He belonged, like Jacobellus, to the more advanced Utraquists; and when the ideas of Přibram gained ground in that Church, even joined the Taborites. Peter Payne was also one of the Bohemian envoys at the Council of Basel, where he was occasionally in violent conflict with his countrymen, the English bishops. Though living so long in Bohemia, Magister Engliš appears never to have thoroughly mastered the language of the country. It is at least certain that when challenged by Magister Přibram to a public theological disputation in that language, Peter was obliged to decline. Some religious treatises, written in Latin, in which Payne defends the teaching of Wycliffe, have been preserved. He appears toward the end of his life to have cast his lot entirely with the men of Tabor, and was still living in that town in 1452.
Among the members of the advanced Calixtine party, which was led by Jacobellus, and afterwards by Archbishop Rokycan, we must mention Vavřinec (Laurence) of Březova, who, though principally known as a historian, was as devoted to theological studies as almost all his contemporaries. His _Chronicon_, written in Latin, is perhaps the most valuable contemporary record of the Hussite wars. The book unfortunately ends abruptly with the year 1421, perhaps in consequence of the death of the author, of whom, however, little is known. The Bohemian writings of Březova are inferior in interest to his Latin work. He wrote in his own language a "book expounding dreams," at the request of King Wenceslas IV., at whose court he probably held an appointment, and a _Chronicle of the World_. He is also the author of a Bohemian translation of the _Travels of Sir John Mandeville_.