Moses the Hungarian (died July 26, 1043) was a Kievan Russian

Kievan Rus'

Kievan Rus was a medieval polity in Eastern Europe, from the late 9th to the mid 13th century, when it disintegrated under the pressure of the Mongol invasion of 1237–1240....

 monk of Hungarian origin. He is venerated as a saint

Saint

A saint is a holy person. In various religions, saints are people who are believed to have exceptional holiness.In Christian usage, "saint" refers to any believer who is "in Christ", and in whom Christ dwells, whether in heaven or in earth...

 by the Eastern Orthodox Church

Eastern Orthodox Church

The Orthodox Church, officially called the Orthodox Catholic Church and commonly referred to as the Eastern Orthodox Church, is the second largest Christian denomination in the world, with an estimated 300 million adherents mainly in the countries of Belarus, Bulgaria, Cyprus, Georgia, Greece,...

.

Moses was born around 990-995. He probably left Transylvania

Transylvania

Transylvania is a historical region in the central part of Romania. Bounded on the east and south by the Carpathian mountain range, historical Transylvania extended in the west to the Apuseni Mountains; however, the term sometimes encompasses not only Transylvania proper, but also the historical...

 to serve the princely family in Kiev

Kiev

Kiev or Kyiv is the capital and the largest city of Ukraine, located in the north central part of the country on the Dnieper River. The population as of the 2001 census was 2,611,300. However, higher numbers have been cited in the press....

. Between 1015 and 1018, already preparing to become a monk, he was in the escort of Predslava

Family life and children of Vladimir I

Until his baptism, Vladimir I of Kiev was described by Thietmar of Merseburg as a great profligate . He had a few hundred concubines in Kiev and in the country residence of Berestovo. He also had official pagan wives, the most famous being Rogneda of Polotsk...

, the daughter of Vladimir I of Kiev

Vladimir I of Kiev

Vladimir Sviatoslavich the Great Old East Slavic: Володимѣръ Свѧтославичь Old Norse as Valdamarr Sveinaldsson, , Vladimir, , Volodymyr, was a grand prince of Kiev, ruler of Kievan Rus' in .Vladimir's father was the prince Sviatoslav of the Rurik dynasty...

 and sister of the future Prince Yaroslav I the Wise

Yaroslav I the Wise

Yaroslav I, Grand Prince of Rus, known as Yaroslav the Wise Yaroslav I, Grand Prince of Rus, known as Yaroslav the Wise Yaroslav I, Grand Prince of Rus, known as Yaroslav the Wise (Old Norse: Jarizleifr; ; Old East Slavic and Russian: Ярослав Мудрый; Ukrainian: Ярослав Мудрий; c...

.

Following the Polish expedition of 1018, he was carried to Poland as a prisoner and could only return in 1025. Moses spent the rest of his life in the Kiev Cave Monastery.

Although the Hungarians were mostly pagan when he was born, and later they became Catholic, the Hungarian chieftain of Transylvania, the Gyula

Gyula II

Gyula II was a Hungarian tribal leader in the middle of the 10th century. He visited Constantinople where he was baptized. His baptismal name was Stephen .- Life :...

, was baptized in Constantinople, which made it possible for Moses to follow the Orthodox Rite.