"Ellens dritter Gesang " ("Ellens Gesang III ", D. 839, Op. 52, No. 6, 1825), in English: "Ellen's Third Song", was composed by Franz Schubert in 1825 as part of his Opus 52, a setting of seven songs from Walter Scott's popular epic poem "The Lady of the Lake", loosely translated into German.
Franz Schubert's "Ellen's Third Song" was included into one of Walter Scott's eight songs.
Walter Scott could have used more of Franz Schubert's songs than just the one. 