In 1780, in the aftermath of the
Orlov Revolt and just before the
Siege of Kastania, Tzanetos Grigorakis received a message with an envoy from his son-in-law
Panagiotaros Venetsanakis and
Konstantinos Kolokotronis to send a relief force and avoid the siege, but Grigorakis having a personal rivalry with Panagiotaros, resigned to the fact that they would have to fight alone. The refusal of support and assistance to the Kastanian chiefs in 1780, objectively served the plans of
Kapudan Pasha Hassan, so the Ottoman military leader did not forget it and, in 1782, Tzanetos Grigorakis became the Bey of Mani.
Founding of Marathonisi and Mavrovouni Grigorakis decided to build forts on the border line, occupying all the surrounding areas, renovating the towers or building new ones, and transferring his hegemony from Skoutari to Gytheio, where he founded Marathonisi, and also founded a new village on the nearby hill Lykovouni, which it named after the region's old name as
Mavrovouni, Laconia. He also built a tower in Mavrovouni and permanently moved there after 1806. The Russo-Turkish War termination treaty took place in 1792, but
Lambros Katsonis refused to abide by the agreement while hosted in Mani to
Porto Kagio, so the Ottomans asked Grigorakis to chase him and arrest him. Katsonis was staying at Grigorakis' house in Mavrovouni, when the Ottomans learned of this and rushed to arrest him. After 1792, the Ottomans did not trust Grigorakis, so he decided to build a castle on the hill of Mavrovouni village. In 1795 the castle was finished and named Melissi castle, also known as Castle of Mavrovouni or Goulades or Beanica or Beanka.
Relationships with the French from the "Voyage de Dimo et Nicolo Stephanopoli en Grece" (1800) In 1798, after the departure of the Russians, Grigorakis decided to turn to the French, sending a letter to
Napoleon Bonaparte with
Demetrio Stefanopoli, writing to him that he would allow the mooring and supply of French ships in Mani. Grigorakis sent to Napoleon his son
Pierros Grigorakis, major of the
Imperial Russian Army. Pierros fought in Italy, where he distinguished himself and was wounded, but won Napoleon's regard, who gave secret instructions to Demetrio Stefanopoli to meet all the representatives of the Greek areas, but Grigorakis suggested that Demetrio stay in Mani and safely meet everyone from there. Indeed, he did, and later, in 1801, Grigorakis was supplied with gunpowder by Napoleon. The Ottomans soon realized that something was wrong and they decided to attack Grigorakis, sending three ships to the port to disembark strong army forces, while at the same time attacking, encircling Mani with their armies from
Mystras and Vardounia. Grigorakis convened a war council, were Demetrio also participated, and decided to resist with a direct counterattack from many points with small army units. Although he had only 1,000 men at his disposal, the Ottomans suffered heavy casualties and retreated to Mystras and their ships, so the counterattack had a successful result. After this, in 1798, the Ottomans had Grigorakis replaced as bey with Panagiotis Koumoundouros. Demetrio Stefanopoli was thrilled with Grigorakis' strategic skills and the way Maniot people fought, informing Napoleon for all these, who agreed to launch a French-Turkish war in the region, but the new
bey Koumoundouros did not agree with Grigorakis and the war never happened. ==Last years==