Katharina von Bora, wife of Martin Luther; formerly a Roman Catholic nun (died 1552)

Katharina von Bora, after her wedding Katharina Luther, also referred to as "die Lutherin", was the wife of the German reformer Martin Luther and a seminal figure of the Protestant Reformation. Although little is known about her, she is often considered to have been important to the Reformation, her marriage setting a precedent for Protestant family life and clerical marriage.

Martin Luther was a German priest, theologian, author, hymnwriter, professor, and former Augustinian friar. Luther was the seminal figure of the Protestant Reformation, and his theological beliefs form the basis of Lutheranism. He is widely regarded as one of the most influential figures in Western and Christian history.

January 29 is the 29th day of the year in the Gregorian calendar; 336 days remain until the end of the year.