According to the Hymnbook 1982 the text is by Carol Christopher Drake (b. 1933) and are © 1971 by Carol C. Stone (hmm; yeah, probably the same lady, but not sure what her last name is). The Episcopalians set it to an Irish tune they call "St. Mark's, Berkeley", with a harmonization by one Noman Mealy, b. 1923, likewise © 1971; I'll bet you anything this Irish tune is better known by some secular title (ever notice how the Irish of old keep swiping these modern hymn tunes?) and is in the public domain.

Liland