Analysis of information sources in references of the Wikipedia article "December 25" in English language version.
He was enthroned in St. Peter's on Christmas Day and took the name of Clement II. .... His first pontifical act was to place the imperial crown upon his benefactor and the queen-consort, Agnes of Aquitaine. The new emperor received from the Romans and the pope the title and diadem of a Roman Patricius...
It was discovered, [...] at Aprohlis, near Dresden, by a farmer named Palitzsch, on the 25th of December 1758[...]