Oscar Ahnfelt (1813–1882) was a Swedish singer, composer and music publisher. Biography. Ahnfelt composed the music for many of Lina Sandell's hymns. He was a pietist, who traveled all over Scandinavia, playing his 10-string guitar and singing her lyrics. The state church authorities did not like pietistic hymns and, anticipating a royal injunction against the singing of Sandell's songs, ordered Ahnfelt to sing them before King Karl XV. But after hearing them, the King announced to Ahnfelt, "You may sing as much as you desire in both of my kingdoms.
https://en.wikipedia.org/wiki/Oscar_Ahnfelt