Original: Oltenia ( Lesser Wallachia in antiquated versions , with the alternate Latin names Wallachia Minor , Wallachia Alutana , Wallachia Caesarea in use between 1718 and 1739 ) is a historical province and geographical region of Romania , in western Wallachia .
Simplified: Oltenia is a historical province and area of Romania , in the western part of Wallachia .