Fulk FitzWarin at the time of his death in 1197. Whittington Castle lies on the English side of Offa's Dyke, which during the Norman era and before was the border between England and Wales. The site was fortified as a castle by William Peverel in 1138, in support of Empress Matilda, the daughter of King Henry I (1100–1135), in her struggle (known as The Anarchy) for the throne against King Stephen (1135–1154), grandson of William the Conqueror. In the late 1140s the lordship of Whittington, like Oswestry and Overton ceased to be part of England and became part of the Kingdom of
Henry I of Jawor Henry I of Jawor Henry I of Jawor (; – 15 May 1346), was a Duke of Jawor-Lwówek-Świdnica-Ziębice during 1301–1312 (with his brothers as co-rulers), sole Duke of Jawor-Lwówek since 1312 and Duke of Głogów since 1337 until his death. He was the third son of Bolko I the Strict, Duke of Jawor-Lwówek-Świdnica-Ziębice, by his wife Beatrix, daughter of Otto V the Long, Margrave of Brandenburg-Salzwedel. On the death of his father in 1301, Henry I, his older brother Bernard and his younger brother Bolko II, inherited his domains; however, because they was still a minors, Henry I and his