Stefan Nemanja was a 12th-century Serbian ruler who established the Nemanjić dynasty and laid the foundations for the future Serbian Empire. Born around 1113, he rose to power as the Grand Župan of Raška, navigating complex political tensions between Byzantine and Hungarian influences. After decades of leadership and military activity, he abdicated his throne to his son, Stefan Nemanjić, to enter monastic life. He spent his final years as a monk named Simeon on Mount Athos, where he worked alongside his son, Saint Sava, to strengthen the Serbian Orthodox Church.