Which founder of a religion abdicated the royal throne?

According to tradition, Siddartha Gautama was a son of King Suddhodana, who was an elected leader of the Shakya people. The Śākyas formed an independent republican state, with the capital of Kapilavastu in present-day Nepal. As Gautama Buddha founded a new religion and abdicated the throne, so the lineage continued with his brother Rahula.