Can anyone please locate the poem which has the lines:
...that wanders o'er her lovely face

I have at last re–discovered the source of this line, found in Walter De La Mare's anthology "Love". Here he has gathered together its many facets and these lines appear in the introductory page of the chapter "Grace and Beauty":–

"There was a sweet and nameless grace,
That wandered o'er that lovely face."

Unfortunately, the lines are from an anonymous author, but I suspect they are from a larger work, and I am endeavouring to trace the original research. Thank you to everyone who joined my quest.