John Beaufort, Marquess of Dorset and "Earl of Dorset", courtesy titles granted to the Beaufort heir-apparent or heir-presumptive. These titles were not recognized by King Edward IV, of the House of York. John had been in exile since 1461, first in Burgundy and then France. When Henry VI of Lancaster reclaimed the throne in October 1470, John returned with his brother Edmund. But a few months later, Henry was driven from the throne again, and the Lancastrians were on the run. John was killed in the Battle of Tewkesbury on 4 May 1471, while fighting beside Edmund, who was captured and beheaded two days later.
Johann Heynlin Sallust (1470-1471), the third the "Orationes" of Bessarion (1471), and the fourth was Fichet's own "Rhetorica" in 1471. The number of the works which they published from 1470 to 1472 amounts to some thirty works. At the end of 1472 or at the beginning of 1473, Heynlin and Fichet left the Sorbonne to settle on Rue Saint-Jacques. Two of their apprentices, Pierre de Kaysere (Petrus Caesaris) and Jean Stoll, established around the same time and on the same street their own competing printing press, with the emblem of the "Soufflet-Vert". The German humanist Johann Reuchlin attached himself to Heynlin, whom