What group was XXX a member of?
Belleau Abbey
Belleau Abbey, later Belleau Priory (otherwise Belle Eau or Belle-Eau) (French: Abbaye de Belleau, Prieuré de Belleau; Latin: Bella Aqua) was a Cistercian monastery in Villeneuve-la-Lionne, Marne, France, about 15 kilometres south-west of Montmirail.
Cistercian