Which of the [mighty] petty kings of earth? C. Wesley. [Guardian Angels.] Given from the Wesley manuscripts in Dr. Leifchild's Original Hymns, 1842, and again in the Wesley Poetical Works, 1868-72, vol. xiii., in 6 stanzas of 8 lines. It is based on Heb. i. 14. A cento therefrom is sometimes found beginning with stanza iii., "Angels, where'er we go, attend."
--John Julian, Dictionary of Hymnology (1907)