[2] It was, however, during his return from Bavaria through Italy that Agrestius became persuaded to take the side of the church of Aquileia, in opposition to that of Rome, in the so-called schism of the Three Chapters.
Columban himself had been initially sympathetic to the Aquileians, perhaps under the influence of his patron, Queen Theodelinda, before finally siding with Rome.
[3] Agrestius wrote a letter to Attala, Columban's successor as abbot of Bobbio, denouncing his adherence to Rome.
[1] Agrestius' aristocratic connections brought him powerful allies, including Warnachar II, the Burgundian mayor of the palace.
He even wrote a petition to Chlothar II, which resulted in a synod being held in Mâcon in 626 or 627 to adjudicate the dispute.