Other references to the female pope are attributed to earlier writers, though none appears in manuscripts that predate the "Chronica". The one most commonly cited is Anastasius Bibliothecarius (d. 886), a compiler of "Liber Pontificalis", who was a contemporary of the female Pope by the "Chronicon"'s dating. However, the story is found in only one unreliable manuscript of Anastasius. This manuscript, in the Vatican Library, bears the relevant passage inserted as a footnote at the bottom of a page. It is out of sequence, and in a different hand, one that dates from after the time of Martin of Opava. This "witness" to the female pope is likely to be based upon Martin's account, and not a possible source for it. The same is true of Marianus Scotus's "Chronicle of the Popes", a text written in the 11th century. Some of its manuscripts contain a brief mention of a female pope named Johanna (the earliest source to attach to her the female form of the name), but all these manuscripts are later than Martin's work. Earlier manuscripts do not contain the legend.