Robert offered to prove it was his by duel and the abbot stupidly accepted .
In 1239 the Abbot of Mont Saint - Michel claimed the right to Wath which Robert held by his wife and the case was heard by the king .
Robert offered to prove it was Robert 's by duel and the abbot stupidly accepted .
In 1239 the Abbot of Mont Saint - Michel claimed the right to Wath which Robert held by his wife and the case was heard by the king .