Volhynian Voivodeship
Mlyniv itself was first mentioned when Grand Duke Alexander Jagiellon gave it away to someone by the name of Bobr sometime in beginning of 16th century. In 1508 it became a private property of Kremenets governor Montaut. Due to ownership of the settlement was changing often, it suffered greatly due to increase of exploitation and implementation of higher taxes and dues. In 1566 there was formed Volhynian Voivodeship, Grand Duchy of Lithuania and the settlement became a part of it. In 1568 Prince Holovnia-Ostrzozecki attacked and robbed the village. After the 1569 Union of Lublin, the Volhynian Voivodeship became part of the Crown of Poland. By the 17th century population of the settlement was no higher than 300 people.