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Sisinnius II of Constantinople

Patriarch of Constantinople

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 1, 2026
Entity authorityQ1273142 ↗
Source-derived summary

Sisinnius II of Constantinople (Greek: Σισίννιος, romanized: Sisinnios; died 24 August 998) became Ecumenical Patriarch of Constantinople in 996 and held the post until his death in 998.

According to the histories of John Skylitzes and Joannes Zonaras, he was extremely well educated, particularly in medical matters, and had been honoured with the office of magistros. He was elected to the patriarchate on 12 April 996, after the see had remained vacant for more than four years, due to the preoccupation of Emperor Basil II with his wars against the Bulgarians.

On 21 February 997, he issued a tomos on prohibiting marriage between persons related to the fifth or sixth degree. These regulations are soon after attested in juridical decisions but appear to have also caused some opposition (Logos Antirrhetikos of Skribas Nikolaos, c. 1030–1040). Two other canons on prohibitions related to marriages are also attributed to him, but are considered as fake by modern scholars. A later note in John Skylitzes' account also reports that Sisinnius II managed to finally lay to rest the quarrels of the tetragamy affair of Leo VI the Wise (r. 886–912). In 997–998, he also issued a typikon concerning the provision of the Metropolitan of Alania in the patriarchal monastery of Epiphanios in Kerasus. Sisinnius II was also the recipient of three letters from Leo of Synada.

He died on 24 August 998.

Editorial summary

This brief starts where responsible research should: with the source description of “Sisinnius II of Constantinople” as patriarch of Constantinople. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1030, 1040—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Sisinnius, Constantinople and Patriarch can be independently traced.
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Why this record matters

The subject matters to the general reference register because the source frames it as patriarch of Constantinople. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jun 1, 2026. The linked authority identifier is Q1273142. VIAF identifies the subject as 54553440. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1030 and 1040.

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This entry incorporates text from “Sisinnius II of Constantinople” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.