Adauctus, a Christian martyr, was a royal steward in a city of Phrygia, the name of which is unknown. He perished during the persecution of Diocletiau, about 303. He is commemorated by the Latin Church, Feb. 7; by the Greeks, Oct. 3 or 4.-Landon, Eccles. Diet. s.v.
Valesius states (Notes to Eusebius) that the Adauctus (or Audactus) mentioned above is not the same with the one celebrated by the Roman Church. But we find that there are two saints of this name commemorated at Rome. One was a companion of Felix, an African bishop, martyred with him in the Diocletian persecution, and is probably the same with the one commemorated Aug. 30. See Baillet, Vies des Saints, vol. ii, Aug. 30; Juinart, p. 248.