Sergios 100 was the husband of Euphemia 4; he and his wife were both of noble family; they were the parents of Platon 1: Theod. Stud., Laudatio Platonis 805A (πατέρες μὲν τῷ μακαρίῳ Πλάτωνι, Σέργιος καὶ Εὐφήμια, ὧν τὸ εὐγενὲς ἐπίσημον). They also had two daughters (Theoktiste 3 and Anna 13): Theod. Stud., Laudatio Platonis 805B. Sergios 100 and Euphemia 4 died during a plague in Constantinople during the reign of the emperor Constantine V (Konstantinos 7): Theod. Stud., Laudatio Platonis 805BD. This was perhaps the outbreak of plague in Constantinople in 747/748; cf. Theoph. AM 6238. They also had three other sons, whose names are unknown; see Anonymi 31.

(Publishable link for this person: )