Great hymn. The only tune it should be sung to is Vaughn Williams's "King's Weston," which was written to fit the words. It's splendid and big and beautiful, like so many of his melodies.
No, excellent hymn. I tried to find a link to the tune in my usual sources but to no avail.
By the way, the Lutheran calendar has retained the Festival of the Holy Name on its traditional January 1 date.