Note 22 — Chapter III · PIPPIN OF HERISTAL AND CHARLES MARTEL.
Reading edition
“This pastoral letter, addressed to Lewis the Germanic, the grandson of Charlemagne, and most probably composed by the pen of the artful Hincmar, is dated in the year 858, and signed by the bishops of the provinces of Rheims and Rouen.”—Gibbon, chap. lii. note 34.