score:8
The whole scoop is covered well in JSTOR's The Catholic Revival in Osnabruck and Minden, 1591-16511.
Long story short:
In the mid 1610's this swung the Osnabruck cathedral chapter to a Catholic majority, which then sought out, in succession, two energetic Counter Reformation leaders meeting the requirement of being "feudal nobility". Recall that Von Wartenberg met the latter as the son, by a morganatic marriage so ineligible to be heir, of Elector Maximillian of Bavaria.
Note that the theological (as opposed to liturgical) qualifications of von Wartenberg were impeccable: He had completed his education at Collegium Germanicum in Rome, seen to be training German Counter Reformation leaders; served as Chancellor for the Prince Elector (Archbishop) of Cologne; and assisted the Archbishop at the Diet of Ratisbon that stripped the lands and Electoral dignity from Frederick V, erstwhile Elector Palatine of the Rhine, to Maximillian of Bavaria.
See also Diocese of Osnabruck in New Advent.
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