[1] Timothy, writing probably towards 600, classifies the Messalians, Euchites, Enthusiasts, Choreuts, Adelphians and Eustathians as Marcianist sects.
[2] Timothy's description of Marcianism shows that they rejected charity and believes that misfortune reflected a lack of the Holy Spirit: They say neither to give alms to the beggar, nor to the widow, nor to the orphan, nor to those in difficult circumstances, nor to those afflicted with leprosy, nor to those who have encountered thieves, barbarian invasion or any other misfortune.
In the 590s, John of Chalcedon and Athanasius of Isauria condemned for Marcianism fled from Constantinople to Rome to appeal their cases to Pope Gregory the Great.
Gregory absolved John of heresy in 595 and Athanasius in 596, although had to first denounce a book in his possession containing Manichaean errors.
[2][4] The emperor Maurice was accused by a Constantinopolitan mob of being a Marcianist in 602, a fact recorded by both Theophylact Simocatta and Theophanes the Confessor.