John Scotus Eriugena
chronology by al klisiak

c. 810 b.
c. 845-847 arrives at the school of Charles the Bald
at Quierzy near Laon, where he teaches grammar and
dialectics
849-860 involved in an intellectual controversy
concerning predestination.
851 Asked by Hincmar of Reims to write a treatise on
predestination.
855-859 writtings on predestination are condemned
859-860 composed the "Annotationes in Marcianum
Capellam"
860-862 undertakes the translation of
Psuedo-Dionysius, 862-864 trans. Maximus Confessor and
others.
865 trans. a sermon by Gregory of Nyssa and Epiphanius
860-875 writes commentaries on the Gospel of John, and
Pseudo-Dionysius.
c 875 d.

I used two websites:
http://www.geocities.com/abglos/early/John_Scotus_Eriugena.
and, The Columbia Electonic encyclopedia.