Catholic Encyclopedia - St. Tarasius, a layman who became Patriarch of Constantinople by acclamation, called for the Second Ecumenical Council of Nicaea, champion of Church unity and of the veneration of the holy ikons. Died 806. www.newadvent.org/cathen/14451b.htm
Catholic Online - Short biography of St. Tarasius. saints.catholic.org/saints/tarasius.html
For All the Saints - Hagiography of Tarasius of Constantinople. users.erols.com/saintpat/ss/0225.htm#tara