The death of one nicknamed "the sufferer" saw the start of the War of the Spanish Succession, and the Rye House plot saw an assassination attempt a king with this name and number along with his heir James.
One king of this name and number allied with Ludwig the German with the Oath of Strassbourg, and received the western portions of the Frankish territory in the 843 treaty of Verdun; that king was nicknamed "the bald." The death of one nicknamed "the sufferer" saw the start of the War of the Spanish Succession, and the Rye House plot saw an assassination attempt a king with this name and number along with his heir James. For 10 points, identify this name and number held by the Stuart who was restored to the British throne after Cromwell's protectorate. 
One king of this name and number allied with Ludwig the German with the Oath of Strassbourg, and received the western portions of the Frankish territory in the 843 treaty of Verdun; that king was nicknamed "the bald."
{Charles II}