His fine collections of manuscripts and coins was purchased by the British Museum.
There are numerous manuscripts of the Defensor pacis extant.
The manuscripts had not been arranged or examined, so that the extent of the loss is unknown.
Of the laymen, the educated copied manuscripts, the others worked at various handicrafts or at agriculture.
The greater portions of his original materials have been preserved, and are included in the Lansdowne manuscripts in the British Museum.