[Footnote 129: The time of Pope Joan (papissa Joanna) is
placed somewhat earlier than Theodora or Marozia; and the
two years of her imaginary reign are forcibly inserted
between Leo IV. and Benedict III. But the contemporary
Anastasius indissolubly links the death of Leo and the
elevation of Benedict, (illico, mox, p. 247;) and the
accurate chronology of Pagi, Muratori, and Leibnitz, fixes
both events to the year 857.]