{{Short description|Head of the Chaldean Catholic Church from 1656 to 1662}} {{Other people|Shimun}} {{Unreferenced|date=April 2026}} {{Infobox Christian leader |image= |honorific_prefix = Mar |name=Shimun XII Yoalaha |birth_name= |church=Chaldean Catholic Church<br />Church of the East |see=Khosrau-Abad of the Chaldeans<br />Holy Apostolic See of Seleucia-Ctesiphon |title=Patriarch of the Chaldeans<br />Patriarch of the Church of the East |residence= Khosrau-Abad near Salmas, Safavid Empire |enthroned= 1656 |ended= 1662 |predecessor= Shimun XI Eshuyow |successor=Shimun XIII Dinkha as Patriarch of the Chaldeans and Patriarch of the Church of the East<br /><br />Joseph I as patriarch in communion with Rome (from 1681) |birth_date= |death_date=1662 }}

Mar '''Shimun XII Yoalaha''' was the seventh Patriarch of the Chaldean Catholic Church, from 1656 to 1662.

He succeeded Patriarch Shimun XI Eshuyow, the seat of the patriarchate of Babylon of the Chaldean Catholic church being in Khosrau-Abad near Salmas, Safavid Empire during his reign.

Mar Shimun XII Yoalaha like his predecessors Shimun X Eliyah and Shimun XI Eshuyow was not formally recognized by Rome after the hereditary Shimun line of Patriarchs was reintroduced by Patriarch Shimun IX Dinkha in the Chaldean church. Hereditary succession is an unacceptable practice in Catholic Church.

His successor in 1662 was Shimun XIII Dinkha, the last of the Shimun line in the Chaldean Church.

==See also== * Patriarch of the Church of the East * List of patriarchs of the Church of the East * List of Chaldean Catholic patriarchs of Babylon

{{s-start}} {{s-rel|Chaldean Catholic Church titles<br />Church of the East titles}} {{succession box |before=Shimun XI Eshuyow |title=Patriarch of the Chaldeans<br />{{Transliteration|ar|DIN|Shemʿon}} line (Khosrou-Abad) |years=(c. 1656 &ndash; c. 1662) |after=Shimun XIII Dinkha }} {{succession box |before=Shimun XI Eshuyow |title= Patriarch of the Church of the East<br />Shem'on line (Khosrou-Abad) |years=(c. 1656 &ndash; c. 1662) |after=Shimun XIII Dinkha }} {{s-end}} {{Patriarch of the Church of the East}} {{authority control}}

{{DEFAULTSORT:Shimun, Xii}} Category:Chaldean Catholic Patriarchs of Babylon Category:1662 deaths Category:Year of birth unknown Category:17th-century Eastern Catholic archbishops Category:17th-century people from Safavid Iran

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