Grace Increate! From Whose vivific fire. [Whitsuntide.] E. Caswall. Published in his Masque of Mary, &c, 1858, p. 254, in 6 stanzas of 4 lines and again in his Hymns & Poems, 1873, p. 273, as a "Hymn to the Holy Ghost." In the Hymnary, 1872, it is given as "O Holy Ghost, From Whose life-giving fire."
--John Julian, Dictionary of Hymnology, Appendix, Part II (1907)