Eustratios 11 was bishop of Albanum; in 767 he was one of the three bishops (cf. Georgios 131 and Citonatus 2) who illegally consecrated as bishop of Rome Constantinus (Konstantinos 140), the antipope: Lib. Pont. 96. 4 ("et aliis duobus episcopis, Eustratio Albanense et Citonato Portuense"). In 769 he was one of the Italian bishops who attended a Council at Rome; he is named twenty-sixth of those summoned by the pope, Stephen IV (III) (Stephanos 84): Lib. Pont. 96. 17 ("Eustracius, episcopus terretorii Albanensis"). After the Council ended he was one of the three bishops (see Gregorios 75 and Theodosios 42) who pronounced the anathema in St Peter's against any one who transgressed against the decisions of the Council: Lib. Pont. 96. 24 ("Eustratius Albano"). Later, when the Lombard king, Desiderius (Desiderios 3), was marching on Rome, pope Hadrian I (Hadrianos 1) drew up an anathema and sent Eustratius the bishop of Albanum ("Eustratium Albanensem") with bishops Andreas of Praeneste and Theodosius of Tibur (Andreas 31 and Theodosios 42) to warn Desiderius not to enter Roman territory without the permission of the pope for fear of the anathema; the king withdrew: Lib. Pont. 97. 25.

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