Pope Stephen IX was pope from about July 14, 939 until his death towards the end of October, 942.

During his pontificate he was subject to Alberic, Prince of the Romans, and did not effectively rule the Papal States. His period as pope was during a brief respite from the period when the church had been ruled by the so-called "pornocracy" of Theodora and Marozia, Roman noblewomen.

References

• from the 9th edition (1887) of the Encyclopædia Britannica