Catholic Encyclopedia - St. Angilbert, abbot of Centula, fathered two children by Charlemagne's unmarried daughter Bertha. He died in 814. www.newadvent.org/cathen/01490b.htm
For All the Saints - Short hagiography puts St. Angilbert of Centula in the best possible light. users.erols.com/saintpat/ss/0218.htm#angi
