"John of Grumbach (German: Johann von Grumbach) (?–1466) was prince-bishop of Würzburg as "John III" from 1455 until his death in 1466." - (en.wikipedia.org 02.12.2020)
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"John of Grumbach (German: Johann von Grumbach) (?–1466) was prince-bishop of Würzburg as "John III" from 1455 until his death in 1466." - (en.wikipedia.org 02.12.2020)
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