In the 7th and 8th century Slavs settled in the Peloponnese. The name Stemnitsa has Slavic roots and means "woodland". After the fall of Constantinople in 1453 the Peloponnese was occupied by the Ottoman Empire. Due to its remote location Stemnitsa served as a relatively safe haven from the Ottomans, and it became a centre of Greek culture and religion. Many old churches from this period have been preserved. The church of Bafero was built in 1185 and the Zoodochos in 1433. The two larger churches are Ai-Giorgis and Agia Paraskevi. The first mention, some say, of the word Stemnitsa, was found in Ottoman taxation documents dated 1512-1515 where the number of families appeared to be about 120. This information was published by professor John Alexandropoulos. In the Grimani Venetian Census report Stemnitsa was shown as the most populous village in Gortynia with 925 people.
