Ruotger in his life of Bruno referred to Israel as Irish, whereas Flodoard in his Chronicle described him as "Britto", which may refer to Brittany, Cornwall or Wales, all three of which were Celtic speaking refuges for Britons who had fled the Anglo-Saxon invasion of England.
Ruotger, na súa vida de Bruno referiu a Israel como irlandés, mentres que Flodoard na súa Crónica o descubriu como "britto", o cal pódese referir a Bretaña, Cornualles ou Gales, os tres refuxios de fala celta para os britanos que fuxían da invasión anglosaxoa sobre Inglaterra.