Fortunatianus of Aquileia

The principal ancient source for Fortunatianus of Aquileia is a paragraph referencing him in "Famous Men" composed by Saint Jerome in 393.

The commentary was known from only a few excerpts: two identified by French monk and scholar André Wilmart (1876-1941) from a Troyes manuscript, one from Angers identified by German philologist and paleographer Bernhard Bischoff (1906-1991), and a reference in Saint Jerome's correspondence (thus predating Hilary on St. Matthew).

In 2012, Fortunatianus' lost commentary was identified by the editor Lukas Dorfbauer in a ninth-century manuscript from the library of Cologne Cathedral.

[3] Fortunatianus was assumed to have favoured anti-Nicene doctrine, though a text from 984 to 986 clearly states that Trinity was one substance he inclined.

He identified two of the four Evangelists in relation to Ezekiel and the Apocalypse; in particular, he suggested that Mark was symbolized as the eagle and John as the lion (Lampe, 1998).