1248, with the fall of the last Byzantine fortress, Monemvasia, that Laconia was fully pacified, and Geraki's purpose was to keep watch over the rebellious Tsakones who inhabited the northern Parnon.

George Pachymeres mentions it as one of the fortresses (along with Grand Maigne, Mystras and Monemvasia) that Prince William II of Villehardouin agreed to hand over as ransom for his release from captivity.

In reality, although Geraki was most probably not immediately surrendered, its exposed position made it vulnerable and it likely fell, if not in the first Byzantine offensives of 1263–64, then certainly by ca.

[8] The Nivelets survived until 1316, when the family was dispossessed due to the firm support of the then baron (Karl Hopf hypothetically names him John II) to the unsuccessful venture of Ferdinand of Majorca to seize the Principality.

After defeating Ferdinand, Prince Louis of Burgundy had the last Nivelet baron executed and gave his lands to one of his own followers, Dreux of Charny.