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Gisela, d. of Hermann II, Duke of Swabia. | + HENRY III, 1039-1056, m. 1, Gunhilda, daughter of Cnut; 2, Agnes, daughter of William, Count of Poitiers. | + HENRY IV, 1056-1106, m. 1, Bertha, daughter of Otto, Marquis of Susa; | + HENRY V, 1106-1125, m. | Matilda, d. of Henry I of England. | + Agnes, m. 1, Frederick of Hohenstaufen, Duke of Swabia, 1080-1105; | + Frederick the One-eyed, Duke of Swabia, d. 1147, m. 1, Judith, daughter of Henry the Black. | + FREDERICK I, Barbarossa, 1152-1190. | | | + HENRY VI, 1190-1197, m. | | Constance of Sicily, d. 1198. | | | | | + FREDERICK II, 1214-1250, m. | | 1, Constance, d. of | | Alfonso II of Aragon; | | | | | + CONRAD IV, 1250-1254, m. | | | Elizabeth, daughter of | | | Otto II of Bavaria. | | | | | | | + Conradin, d. 1268. | | | | | + Manfred, d. 1266. | | | | 2, Iolande de Brienne; | | | | 3, Isabella, d. of | | John of England. | | | + PHILIP, 1198-1208, m. | Irene, d. of Isaac II, | Angelus, Eastern Emperor. | | | + Beatrix, m. | OTTO IV, 1208-1214, | d. 1218. | + CONRAD III, 1137-1152.