Michael I Cerularius

Michael I Cerularius
Ecumenical Patriarch of Constantinople
The enthronement of Michael I Cerularius, from the Madrid Skylitzes
See	Constantinople
Installed	1043
Term ended	21 January 1059
Predecessor	Alexius I Studites
Successor	Constantine III Lichoudas
Personal details
Born	Michael Keroularios c. 1000 Constantinople, Byzantine Empire
Died	21 January 1059 Constantinople, Byzantine Empire
Nationality	Byzantine
Denomination	Eastern Orthodoxy
Residence	Constantinople

Michael I Cerularius or Keroularios (Greek: Μιχαὴλ Κηρουλάριος; c. 1000 – 21 January 1059 AD) was the patriarch of Constantinople from 1043 to 1059 AD. His disputes with Pope Leo IX over church practices in the 11th century played a role in the events that led to the Great Schism in 1054.^[1]