Girish Mahajan (Editor)Im a travel junky who loves to gain knowledge coz u know knowledge is powerJohn XIII of ConstantinopleUpdated on Oct 03, 2024EditLikeCommentShareShare on FacebookTweet on TwitterShare on LinkedInShare on RedditSign inJohn XIII was the Ecumenical Patriarch of Constantinople from 1315 to 1320.More Alchetron TopicsReferencesJohn XIII of Constantinople Wikipedia (Text) CC BY-SASimilar Topics