G7LDB - Gregory 7th Letter Database
Database of the Letters of Pope Gregory VII (1073-1085): Which letter is in which collection?

letter

Registrum IX, 27

Common name of letterRegistrum IX, 27
Pages in Caspar's edition from 610 to 611 (â–ºdMGH)
Number in JL 5235
Type of document(Normal) letter
Abstract
(from Caspar's edition)
Gregory VII orders Archbishop John VI of Naples to warn the magister militum Sergius VI against supporting Prince Jordan I of Capua, a banned enemy of the church.
Date of issue between 1082 June 24 and 1082 December 31
(Something must be wrong here. Caspar gives the date as after 1082, according to Wikipedia John VI was bishop till 1080.)
Address lines GREGORIUS episcopus servus servorum Dei I. Neapolitano archiepiscopo salutem et apostolicam benedictionem
IncipitNon ignorat prudentia tua nobis imminere...
Is included in
Name of collectionNumber, page, chapter... within collection

Register of Gregory VII

book 9, no 27