Was a protestant prince who became a catholic king became the first king of the bourbon dynasty?

Yes, Henry IV of France was a Protestant prince who converted to Catholicism and became the first king of the Bourbon dynasty. His conversion was famously summarized by his statement, "Paris is worth a Mass," as he sought to unify France and bring peace after years of religious conflict during the Wars of Religion. His reign marked the beginning of the Bourbon dynasty, which ruled France for over a century.