Unknown 2145(Natural Landmark)
Island in the Rhine in DKAR 1:184. Editor thinks has probably now disappeared.
Island near Angers, identified by editor of DKAR 1:58 as Gilettes. Editor of cartulary of St-Aubin says it is opposite La Baumette (SW quarter of Angers, on banks of Lac de Maine). Not so far located via Geonames, Google Maps or OpenStreetMap.