The pagan religion of the Germanic tribal confederation of the Franks has been traced from its roots in polytheistic Germanic paganism through to the incorporation of Greco-Roman components in the Early Middle Ages. This religion flourished among the Franks until the conversion of the Merovingian king Clovis I to Nicene Christianity (c. 500), though there were many Frankish Christians before that. After Clovis I, Frankish paganism was gradually replaced by the process of Christianisation, but there were still pagans in the late 7th century.[citation needed]