The village was first mentioned in 1285 in the document allowing komes Adam to establish a new village Sępnia (contemporary Poręba Wielka), which would lay close to Włosienica.

Politically it belonged initially to the Duchy of Racibórz and the Castellany of Oświęcim, which was in 1315 formed in the process of feudal fragmentation of Poland into the Duchy of Oświęcim, ruled by a local branch of Silesian Piast dynasty.

In 1457 Jan IV of Oświęcim agreed to sell the duchy to the Polish Crown, and in the accompanying document issued on 21 February the village was mentioned as Włoszenycza.

[3] The territory of the Duchy of Oświęcim was eventually incorporated into Poland in 1564 and formed Silesian County of Kraków Voivodeship.

It was annexed by Nazi Germany at the beginning of World War II, and afterwards it was restored to Poland.