 So I decided to devote "Falls the Shadow" to Simon and "The Reckoning" to Llewelyn".Penman's characterization of Simon de Montfort is that of a man increasingly disillusioned by his sovereign, who rebels in 1263, becomes regent to Henry III, and attempts to re-establish rights granted under the Magna Carta.In addition to the story of Simon de Montfort and his wife, Eleanor the Countess of Pembroke and sister to King Henry III, the novel presents characters such as the Welsh ruler Llywelyn Fawr and London's FitzThomas.