Joseph Hermann Mohr (10 January 1834 – 7 February 1892) 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. Mohr published several hymnals, promoting the return of Gregorian chant in Latin to the church liturgy, but writing German hymns intended for events beyond mass, such as processions. He is known for his hymn "Ein Haus voll Glorie schauet" which follows models of military marches. It appears in modern hymnals, however with modified text. Source: Wikipedia (en)