 Complete the following phrase:  At this juncture, Charles set up his own Merovingian king, Clotaire IV; Dagoberts true successor, Chilperic II, being a staunch ally of Ragenfrid and the Neustrian nation. Ragenfrid and his king allied with Odo the Great, duke of Aquitaine independent since 715, but was defeated at Amel north of St. Vith in 716, and in March, 717, at 