That was the first stanza of a hymn we used to sing in grammar school!
Refrain:
Beautiful Angel, my guardian so mild,
Tenderly guide me, for I am thy child.
Beautiful Angel, my guardian so mild,
Tenderly guide me, for I am thy child.
Verse 2
Angel so holy, whom God sends to me,
Sinful and lowly, my guardian to be,
Wilt thou not cherish the child of thy care?
Let me not perish, my trust is thy care!
What a beautiful song and prayer! Thank you so much for posting those to this thread.