Johann Gebhard von Mansfeld-Vorderort, born circa 1525–30, was Archbishop-Elector of Cologne.

[1][better source needed] Both Gebhard and his older brother were founding members of the Schmalkaldic League.

[2] A dispute between Gebhard and his brother, Johann Albert, Graf von Mansfeld zu Arnstein (1522–1586) in 1546, led to mediation by Martin Luther.

[4] As Domherr, a member of the Cathedral chapter, he lived in concubinage.

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