Person Name: Unknown Author of "Glory to the blessed Jesus" in The Hymnal, Revised and Enlarged, as adopted by the General Convention of the Protestant Episcopal Church in the United States of America in the year of our Lord 1892 In some hymnals, the editors noted that a hymn's author is unknown to them, and so this artificial "person" entry is used to reflect that fact. Obviously, the hymns attributed to "Author Unknown" "Unknown" or "Anonymous" could have been written by many people over a span of many centuries.
Anonymous