Her Virgin eyes saw God incarnate born. T. Ken. [The Mother of our Lord.] This, in The English Hymnal, 1906, No. 217, is a cento of lines gathered together from a poem entitled "Sion: or, Philothea," in Bp. Ken's Works, 1721, vol. iv., pp. 370, &c.; the cento beginning at the line "When she to Bethlem came that happy morn." [Rev. James Mearns, M.A.]
--John Julian, Dictionary of Hymnology, New Supplement (1907)