^After Schwennicke, European pedigrees Volume I.1 (2005) Plate 10, and Volume I.2 (1999), Plate 201 The identification of Aeccheze with Esch-SauerAs in genealogy-medieval transfer is made, must be false: Matilda died on 4 of the month and was on 7 (Trillmich) buried - the distance between Esch-Sauer and Brauweiler is approximately 180 kilometers, which was not the time to establish, within three days, the exclusion of Düren-Echtz to Brauweiler is 40 kilometers. Echtz also fits better than Esch Sauer to Mathilde's brother Hermann, the count in Zülpichgau. That Encyclopedia of the Middle Ages, Edward Hlawitschka, Werner Trillmich and Emil Kimpen keep open the point by equating it solely with Aeccheze Esch, but not tell what they think Esch.