When Christ came down on earth of old. Cecil F. Alexander. [Advent.] Contributed to the S. P. C. K. Hymns, 1852, No. 2, in 4 stanzas of 4 lines. This is altered in Kennedy, 1863, to “From heaven when Christ came down of old," and in the Westminster Abbey Hymn Book, 1883, to “When Christ from heaven came down of old." In the Lyra Anglicana, 1862, Mrs. Alexander expanded the original hymn to 8 stanzas of 4 lines, as “When Jesus came to earth of old." This is in Thring's Collection, 1882. From it "O Son of God, in glory crowned," in the Ibrox Hymnal, 1871, is taken.
--John Julian, Dictionary of Hymnology, Appendix, Part II (1907)