[[Image:Theodore_the_Studite.jpg|right|thumb|St. Theodore the Studite]]
Our [[Venerable]] and God-bearing Father '''Theodore the Studite''' (759-826) was a [[hymnographer]] and [[theologian]] as well as the [[abbot]] of the [[Monastery]] of [[Studion Monastery|St. John the Baptist in Studios]], outside of Constantinople.
His great theological contribution, ''On the Holy Icons'', was for the defense of [[icons]] during the Second [[Iconoclasm]] Period (814-842). He is also known for his writings and influence on monastic reform. His [[feast day]] is on [[November 11]], and the [[Translation (relics)|transfer]] of his [[relics]] from Cherson to Constantinople in 845 on [[January 26]].
He and one of his brothers, St. Joseph the Confessor, Archbishop of Thessaloniki (also called "Joseph the Studite"; 762-832; [[July 14]] and January 26), are known for their work on the ''[[Triodion]]'', the service book for the first three weeks of [[Great Lent]]. The first Lenten weekday canon is attributed to St. Joseph and the second to St. Theodore.<ref>''The Lenten Triodion'', trans. by Mother Mary and [[Archimandrite]] [[Kallistos Ware]], p. 41. ISBN 1878997513</ref>