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Catholic Encyclopedia
http://www.newadvent.org/cathen/05614c.htm
St. Eusebius, anti-Arian bishop of Samosata, martyr, d. 379 or 380.
For All the Saints
http://www.saintpatrickdc.org/ss/0621.htm#euse
Short biography of St. Eusebius of Samosata.