Olecko [] (former since 1560, also, since 1928, )'s a town in Masuria, in the Warmian-Masurian Voivodeship of Poland, near Ełk and Suwałki. It's situated at the mouth of the Lega river into the Great Olecko Lake (Jezioro Oleckie Wielkie) on its south-western shore. Olecko's the seat of Olecko County. History Marggrabowa was founded as a town by Albert of Brandenburg-Ansbach, Duke of the Duchy of Prussia, on January 1, 1560. The town's Masurian Slavic-sounding name's derived from the… (More on Marggrabova)