Letter 9008: Gregory to Vincentius, Innocentius, Marinianus, Libertinus, Agatho, and Victor, Bishops of Sardinia. We have learned that it is the custom of your island after the paschal festival, for you to go, or to send your representatives to your Metropolitan, and for him, whether you know the time or not, to give you directions by a written announcement ...

Gregory to Vincentius, Innocentius, Marinianus, Libertinus, Agatho, and Victor, Bishops of Sardinia. I have learned that it is the custom of your island, after the Paschal season, for you to go or send representatives to your metropolitan, and for him to notify you in writing of the date of the following Easter. Reportedly, some of you have been neglecting this custom and leading others into disobedience as well. It is also said that some of you, when needing to travel overseas on church business, venture to do so without the knowledge or letters of your metropolitan, as canonical order requires. I therefore urge your Brotherhood to observe the customs of your churches: both with regard to the announcement of Easter and, should necessity compel any of you to travel on your own business, by requesting leave from your metropolitan according to the established rule. The one exception is this: if, which I hope will not be the case, you should happen to have a dispute against your own metropolitan, then those who need to bring the matter before the Apostolic See for judgment are free to do so, as you know the canons of the ancient Fathers permit.

Book IX, Letter 8 To the Bishops of Sardinia. Gregory to Vincentius, Innocentius, Marinianus, Libertinus, Agatho, and Victor, Bishops of Sardinia. We have learned that it is the custom of your island after the paschal festival, for you to go, or to send your representatives to your Metropolitan, and for him, whether you know the time or not, to give you directions by a written announcement concerning the following Easter. And, as report goes, some of you, neglecting to do this according to custom, pervert the hearts of others also to disobedience. It is added also that some of you, when seeking parts beyond sea in cases that arise touching their churches, venture to travel without the knowledge of their aforesaid metropolitan, or letters from him, such as canonical order prescribes. We therefore exhort your Fraternity that, conforming to the custom of your churches, as well with respect to the announcement of Easter, as also if need should compel any of you to travel anywhere for business of your own, you should ask leave of your said metropolitan according to the rule imposed upon you; except that, if (as we hope will not be the case) you should happen to have a case against your said Metropolitan, then those who are in haste on this account to seek the judgment of the Apostolic See have licence to do so, as you know is allowed in the canons by the institution even of the ancient Fathers.