His Holiness Pope Stephen IX (in Latin Stephanus Nonus) is the Pope number 127 of the Catholic Church.
Esteban was born in Roma, in the current country of Italy.
The Holy Father Stephen IX initiated his pontificate in the year 939. He succeeded Pope Leo VII. His papacy lasted for 3 years, ending during the year 942. He was succeeded by Marinus II, who would become the following bishop of Rome.