Court chaplain to William the Conqueror in England. Hermit in the forest of Arrouaise, Artois (in modern France) in 1090. His reputation for sanctity attracted disciples, and with them he founded the Augustinian monastery at Arrouaise. Martyr.
- Book of Saints, by the Monks of Ramsgate
- Heiligen 3s
- Katherine Rabenstein
- Our Sunday Visitor’s Encyclopedia of Saints
- “Blessed Hildemar of Arrouaise“. Saints.SQPN.com. 12 January 2013. Web. 30 September 2014. <>