"Johann II. von Löwen (1309-1324), Herr in Herstal" - https://ikmk.smb.museum/ndp/person/10088, 22.11.2021
de
"Johann II. von Löwen (1309-1324), Herr in Herstal" - https://ikmk.smb.museum/ndp/person/10088, 22.11.2021
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