1493 - 1552 Person Name: Olaus Petri Author of "O Fader vor, barmhjertig, god" in Salmebog for Lutherske Kristne i Amerika Olof Persson, sometimes Petersson (January 6, 1493 – April 19, 1552), better known under the Latin form of his name, Olaus Petri (or less commonly, Olavus Petri), was a clergyman, writer, judge and major contributor to the Protestant Reformation in Sweden.
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Olavus Petri