"Gaston Henri de Bourbon, Duke of Verneuil (3 November 1601 – 28 May 1682), was the illegitimate son of King Henry IV of France and his ...
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mistress, Catherine Henriette de Balzac d'Entragues. He was the bishop of Metz from 1612 to 1652, despite not being ordained. In his early 50s he was displaced and had a career as a diplomat." - (en.wikipedia.org 18.12.2020)