Felix 4 was bishop of Arelate (or possibly a priest); as legate of a church council in Gaul, he was one of the hundred and twenty-five Western bishops who attended the Council of Rome at Easter 680, and who subscribed the decree condemning monotheletism: Riedinger, p. 148, lines 10-12 (= Mansi XI 305-306) (Φίληξ ἐλάχιστος πρεσβύτερος τῆς ἁγίας ἐκκλησίας Ῥελατένσου, λεγάτος τῆς σεβασμίας συνόδου τῆς ἐν τῇ χώρᾳ τῶν Γάλλων καθεστώσης; the old Latin version printed in Riedinger, p. 149, line 9, calls him "Felix humilis episcopus sanctae ecclesiae Arelatensis, legatus uenerabilis sinodi per Galliarum prouinciae constituti"). The two other Gallic representatives were Adeodatos 2 (bishop) and Taurinos 1 (deacon); the epithet ἐλάχιστος suggests that Felix was in fact a bishop and the correct reading is preserved (as often) in the old Latin version.

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