John III of Grumbach, grave sculpture in Wurzburg CathedralMultiple prince-bishop's coat of arms in the Ingeram CodexCoat of arms of the House of Grumbach according to the Scheibler Coat of Arms book. John III continued it in a multiple coat of arms.
John of Grumbach (
German: Johann von Grumbach) (?–1466) was
prince-bishop of Würzburg as "John III" from 1455 until his death in 1466.
Alfred Wendehorst: Das Bistum Würzburg Teil 3 - Die Bischofsreihe von 1455 bis 1617. (= Germania Sacra; Neue Folge 13). Berlin, 1969. pp. 3–20 (
digitalised)