Joseph Hermann Mohr was a German Catholic priest, a Jesuit, hymn writer, and hymnologist. He was a member of the Society of Jesus. When all its institutions were closed due to the Jesuits Law of 1872, he left Germany. He returned in 1882 and worked as a hymnologist.

Siegburg is a city in the district of Rhein-Sieg-Kreis in North Rhine-Westphalia, Germany. It is located on the banks of the rivers Sieg and Agger, 10 kilometres (6.2 mi) from the former seat of West German government Bonn and 26 kilometres (16 mi) from Cologne. The population of the city was 39,192 in the 2013 census.