Final answer:
Paul Gerhardt and Johann Heermann are two German hymn writers who composed the hymns 'O Sacred Head, Now Wounded' and 'Ah, Holy Jesus, How Hast Thou Offended', respectively.
Step-by-step explanation:
Two other German hymn writers are Paul Gerhardt and Johann Heermann. Paul Gerhardt composed the hymn 'O Sacred Head, Now Wounded' (O Haupt voll Blut und Wunden) and Johann Heermann wrote the hymn 'Ah, Holy Jesus, How Hast Thou Offended' (Herzliebster Jesu, was hast du verbrochen). These hymns are still widely sung and have become staples in Christian worship.