Direct references to Tsakonia in Ottoman sources are quite rare. Apart from the Ottoman registers, which might require detailed analyses and studies entirely devoted to this subject, and some references on the geography of this remote and isolated area, the only source that gives direct information on Tsakonia is the famous Ottoman traveller and chronicler Evliyâ Çelebi, who visited the region in the mid-17th century. References in the Ottoman Archives on this area seem scarce as well, except for the indirect ones referring to the Tsakonian-origin Greek settlements in the Marmara region, which are referred to as “Tsakonochoria of Marmara”. Despite its isolated position, Tsakonia draws attention also with its close trade links with the centre of the Ottoman Empire. The principal aim of this study is to account for this region’s socio-economic relations with the Marmara basin.