Germanus I of Constantinople (c.634–740) was Patriarch of Constantinople from 715 to 730, when he resigned over the issue of iconoclasm.
The Liber Pontificalis for Gregory II (715–731), recounts in great detail the conflicts between the Eastern Roman Empire and the Papacy, with repeated attempts at the life of the pope.
An account of the anti-iconoclast rebellion of 726–727 in Byzantine Italy, from the “Historia Langobardorum” by Paul the Deacon.