Christian funeral rites in Byzantium
Christian funeral rites in Byzantium are little known and even less studied. Elena Velkova Velkovska made some studies focusing on Byzantine tradition in Greek language and defined three major periods, namely the early period (fourth to fifth century), the euchological repertory (eighth to twelfth centuries), and the oldest rite (tenth century).
Source: Wikipedia — Christian funeral rites in Byzantium (CC BY-SA 4.0)