Stephen II of Amasea ( el, Στέφανος Β'), (died 19 July 928) was the

Ecumenical Patriarch of Constantinople The ecumenical patriarch ( el, Οἰκουμενικός Πατριάρχης, translit=Oikoumenikós Patriárchēs) is the archbishop of Constantinople ( Istanbul), New Rome and '' primus inter pares'' (first among equals) among the heads of ...

from 29 June 925 to 18 July 928. He appears to have been appointed to the post by

Romanos I Lekapenos Romanos I Lekapenos ( el, Ρωμανός Λεκαπηνός; 870 – 15 June 948), Latinized as Romanus I Lecapenus, was Byzantine emperor from 920 until his deposition in 944, serving as regent for the infant Constantine VII. Origin Romanos ...

after the death of Nicholas I as a stop-gap until Romanos's own son, Theophylact, was old enough to assume the post. Steven Runciman calls him a "deliberate nonentity". He is a saint, commemorated on July 18.Complete List of Saints
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References

928 deaths 10th-century patriarchs of Constantinople People from Amasya Year of birth unknown {{EasternOrthodoxy-bishop-stub