A council in the Blachernai palace deposed the patriarch Kosmas II

Summary:
Manuel I, after returning from Ikonion, asked bishops privately about the monk Niphon. Most told him the truth about Niphon's heretical views, while Kosmas II praised him. Manuel then asked the bishops formally: they condemned Niphon for impiety, while Kosmas still praised him. Some archbishops saw Kosmas consorting with Niphon, and asked the emperor to call a council. Kosmas was examined in a council presided over by Manuel in the Blachernai palace. There were nine lay officials present plus the emperor, and 33 senior prelates (as well as Kosmas). Manuel asked Kosmas about Niphon, and he replied that he was orthodox. Metropolitans condemned by Choniates as unrighteous seized on this, and the council decided it was enough proof, determining that Kosmas had the same beliefs as the Bogomil Niphon, and so should be deposed. After deposition, Kosmas looked round the council, and cursed the womb of the empress Eirene not to bear a male son. Then he excommunicated some of the imperial family and the council as imperial sycophants who had deposed him uncanonically. Stephanos Kontostephanos, Manuel's brother-in-law, was very angry at the curse, and rushed at Kosmas planning to punch him; but he stopped in time. Manuel, the rest of the family and other members of the council showed disapproval of Stephanos' impiety, though they too were furious at Kosmas. Kosmas told them to let Stephanos be, for he had not yet suffered his stony fate (a prophecy of his death). Manuel, probably conscience-stricken that Kosmas was a good and devout man badly treated, merely deposed him without further punishment, alleging as his only reason the deprivation of an heir 
Dates:
1147 February 26 
Alexios Komnenos Bryennios, son of Anna Komnene (Alexios 17005)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
Andronikos EuPhorbenos, strategos of Cilicia (Andronikos 17007)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
unrighteous metropolitans opposed to Kosmas II Attikos (Anonymi 190)
  • They seized on the plausible charge that Kosmas 12, who was a good friend of the imprisoned heretic Niphon 17001, shared his heretical views; they had him accused (or rather condemned), interrogated over things of which he was ignorant and deposed (:) Niketas Choniates, Historia 80.17-81.25
archbishop of Bizye [1147] (Anonymus 729)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Basileios Pekoules, krites of the velon and koiaistor (Basileios 201)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307-308
Basileios, Metropolitan of Laodikeia [1147, 1157] (Basileios 234)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Basileios, metropolitan of Tyana [1147] (Basileios 235)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Eirene (Bertha of Sulzbach), first wife of Manuel I (Eirene 66)
  • Her womb was cursed by the deposed patriarch Kosmas 12, so that it should not bear a male son, and others were excommunicated (:) Niketas Choniates, Historia 81.26-27
  • Her womb was cursed by Kosmas 12, and she produced only daughters: Niketas 25001 had no idea whether there was a causal connection (:) Niketas Choniates, Historia 81.46-82.49
Georgios, metropolitan of Larissa [1147, 1157] (Georgios 257)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Georgios, metropolitan of Apameia [1147, 1157] (Georgios 258)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Georgios, metropolitan of Methymna [1147, 1157] (Georgios 259)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Georgios, archbishop of Kios [1147] (Georgios 260)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 311
Gregorios, metropolitan of Klaoudioupolis [1147, 1157] (Gregorios 161)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Gregorios Gamalas, archbishop of Karabizye [1147, 1157] (Gregorios 162)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Ioannes Taronites (Taronitopoulos), doux of Skopje (Ioannes 117)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
Ioannes Rogerios Dalassenos, kaisar (Ioannes 306)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
Ioannes Alopas, krites of the velon (Ioannes 453)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 308
Ioannes Kolpotos, archbishop of Ephesos [1147] (Ioannes 454)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 309
Ioannes, metropolitan of Nikomedeia [1147] (Ioannes 455)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Ioannes, metropolitan of Chalcedon [1147] (Ioannes 456)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Ioannes, metropolitan of Sardis [1147] (Ioannes 457)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Ioannes, metropolitan (archbishop?) of Mesene [1147] (Ioannes 458)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Konstantinos Komnenos, megas droungarios, doux of Berroia (Konstantinos 131)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
Konstantinos, archbishop of the metropolis of Caesarea (Cappadocia) [1147] (Konstantinos 271)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 309
Konstantinos, metropolitan of Christianoupolis [1147] (Konstantinos 272)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Konstantinos, archbishop of Gotthia [1147] (Konstantinos 273)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Konstantinos, metropolitan of Amastris [1147] (Konstantinos 274)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Konstantinos Angelos, son-in-law of Alexios I (Konstantinos 17001)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
Kosmas II Attikos, patriarch of Constantinople (Kosmas 12)
  • Was deposed from the patriarchal throne of Constantinople (:) Kinnamos 64.1
  • A document was issued, with the usual authentification, deposing him from the patriarchate of Constantinople for being judged to have the same beliefs as the Bogomil Niphon 17001 (February 24, 1147:Μηνὶ Φεβρουαρίῳ κϛ´, ἡμέρᾳ τετάρτῃ, ἰνδικτιῶνος ι´) Council of 1147 307, tit
  • He had consorted with the condemned heretic Niphon 17001, causing outrage among his clergy, who had Manuel 1 convene a council to depose him; asked by Manuel, he said Niphon was orthodox; this was enough proof for him to be deposed (:) Council of 1147 308-309
  • When asked by the emperor Manuel 1 privately about the monk Niphon, he praised him as pious and unrivalled in virtue; asked the same in public, he answered just as simple-mindedly. All called him unworthy and he was deposed (:) Kinnamos 65.19-66.9
  • When he had been deposed, he looked round the council, and cursed the womb of the empress Eirene 66, that it should not bear a male son; then he excommunicated some of the imperial family and the council as imperial sycophants who had deposed him uncanonically (:) Niketas Choniates, Historia 81.26-31
  • When the imperial family and members of the council showed their disapproval of Stephanos 17003's violent impulse, Kosmas told them to let him be, for he had not yet suffered his stony fate (a prophecy of his death) (:) Niketas Choniates, Historia 81.38-45
Leon Charsianites, metropolitan of Dristra [1147, 1166, 1170, 1172] (Leon 207)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Leon, archbishop of Parion [1147] (Leon 208)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Leon, metropolitan of Nicaea [1147, 1157] (Leon 209)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Emperor Manuel I Komnenos (Manuel 1)
  • Asked bishops privately about the monk Niphon 17001 and was told the truth by most, while Kosmas 12 praised him; he then asked bishops collectively: they condemned Niphon for impiety, while Kosmas, continuing his praise, was deposed (When he returned from Ikonion:βασιλέως ἐν Βυζαντίῳ γεγονότος) Kinnamos 65.17-66.7
  • He presided over a well-attended council, convened in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
  • He was asked to call the council by archbishops who saw Kosmas 12 consorting with Niphon 17001, the condemned Bogomil; he asked Kosmas about Niphon before the council, and he said he was orthodox; this was enough proof for deposition (:) Council of 1147 308-309
  • He was angry at the curse put on Eirene 66's womb, but he and his family were also distressed by the violent and impious reaction of Stephanos 17003 (:) Niketas Choniates, Historia 81.38-42
  • Manuel, probably conscience-stricken that Kosmas was a good and devout man badly treated, merely deposed him without further punishment, alleging as his only reason the deprivation of an heir (:) Niketas Choniates, Historia 82.49-51
Michael, metropolitan of Antioch in Pisidia [1147] (Michael 276)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Nikephoros, metropolitan of Rhodes [1147] (Nikephoros 180)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Nikephoros, metropolitan of Neokaisareia [1147] (Nikephoros 181)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Nikephoros, metropolitan of Traïanoupolis [1147] (Nikephoros 182)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Nikolaos, bishop of Nikopolis [1147] (Nikolaos 246)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Nikolaos, archbishop of Arkadioupolis [1147] (Nikolaos 247)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 311
Niphon, heretic monk (Niphon 17001)
  • The admission by Kosmas 12 before the council that Niphon was orthodox was enough to establish his guilt and have him deposed (:) Council of 1147 308-309
Petros, metropolitan of Kerasous [1147] (Petros 150)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Petros, metropolitan of Herakleia [1147] (Petros 151)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Stephanos Kontostephanos, brother-in-law of Manuel I, fleet commander (Stephanos 17003)
  • He attended, with many others, a council convened by Manuel 1 in the Blachernai palace, which determined that Kosmas 12 had the same beliefs as the Bogomil Niphon 17001, and deposed him (:) Council of 1147 307
  • As a relation of Manuel 1, he was very angry at the curse on Eirene 66's womb, and rushed at Kosmas 12 planning to punch him, but stopped himself in time; Manuel, the rest of the family and other members of the council showed their disapproval of Stephanos' impiety (:) Niketas Choniates, Historia 81.32
Theodoros, metropolitan of Myra [1147] (Theodoros 239)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 310
Theophanes, archbishop of Cherson [1147] (Theophanes 111)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 311
Theophilos, metropolitan of Kyzikos [1147] (Theophilos 106)
  • Signed the horos of the council to depose Kosmas 12 (:) Council of 1147 309