Pope Innocent VIII had in February 1490 delegated the investigation necessary for this dispensation to bishop Sixtus of Freising and two clergymen from Munich.
Sixtus of Tannenberg was a son of Johann Tannberg of Aurolzmünster and Ursula von Rohr, a sister of Archbishop Bernhard von Rohr.
Pope Sixtus V | Pope Sixtus IV | Pope Sixtus II | Sixtus of Tannberg | Prince Sixtus of Bourbon-Parma |