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. Go to person page >
Thou visitest the earth in love
And sendest showers from above,
Enriching all the land;
Thy streams exhaustless bless the field,
Preparing it the grain to yield
Provided by Thy hand.