Tradition
St. Jerome
De Viris Illustribus (Illustrious Men)
Chapter 118
Lucius, bishop of the Arian party after Athanasius, held the bishopric of the church at Alexandria, until the time of the Emperor Theodosius, by whom he was deposed. Certain festal epistles of his, On the passover are extant, and a few short works of Miscellaneous propositions.
Source: De Viris Illustribus (Illustrious Men) (New Advent)