558 Wikidata - Different death date (Aschersleben-11,)
Sources
↑ Isenburg, Wilhelm Karl Prinz zu/Freytag von Loringhoven, Frank Baron/Schwennicke, Detlev von. Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Band I Tafel 68 Das Askanische Haus I Tafel 121 Die Fürsten (Könige, Herzoge) von Grosspolen 1202-1296 des Stammes der Piasten.
Source: S2 Title: Pedigree Resource File CD 49 Abbreviation: Pedigree Resource File CD 49 Publication: (Salt Lake City, UT: Intellectual Reserve, Inc., 2002)
Source: S3 Title: Ancestral File (TM) Abbreviation: Ancestral File (TM) Author: The Church of Jesus Christ of Latter-day SAINTS Publication: June 1998 (c), data as of 5 JAN 1998 Repository: #R1