IOANNES [I], son of DOCIBILIS [I] Lord of Gaeta & his wife Matrona --- (-after Jun 933). He was associated by his father in ruling Gaeta in early 877 or before, as shown by a letter of Pope John VIII dated 9 Apr 877 addressed to "Decibili et Iohanni hypatis" thanking them for attacking the Saracens[2336]. The testament of "Docibilis ypatus civitatis istius Gaietane", dated 906, names his wife (and her father) and his children (in order) "Bona, Maria, Euphemia, Jean, Léon, Anatole, Megalu"[2337]. He succeeded his father as Lord [prefect/hypatos] of Gaeta. He was granted the Byzantine title patrikios in 914 by the Byzantine strategos in Campania in an attempt to get the support of Gaeta in fighting the Arabs[2338]. He participated in the expedition which removed the Arab settlement from the mouth of the River Garigliano in 915, for which he was rewarded with a confirmation of the transfer of Fondi and Traetto by Pope John X[2339]. A charter dated Jun 933 records a donation with the consent of "domni Iohannis imperiali patricii et domni Docibili seu domni Iohannis…duces et ypati"[2340].
m ---. The name of Ioannes´s wife is not known.
Mistress (1): ---.
Ioannes [I] & his wife had seven children