Earth and the TV mini-series adapted from it. Issue Stephen of Blois married Matilda of Boulogne in 1125. They had five children: Baldwin (died in or before 1135) Matilda (died before 1141), married in infancy to Waleran de Beaumont, Count of Meulan Eustace IV, Count of Boulogne (c. 1130 – 1153), ruled Boulogne 1146–1153 William I, Count of Boulogne (c. 1135 – 1159), ruled Boulogne 1153–1159 Marie I, Countess of Boulogne (c. 1136 – 1182), ruled Boulogne 1159–1182 King Stephen's illegitimate children by his mistress Damette included: Gervase, Abbot of Westminster Ralph Amalric Genealogical chart Notes References Bibliography Amt, Emilie. (1993) [The Accession of Henry II in England: Royal Government Restored, 1149–1159.] Woodbridge, UK: Boydell Press. . Barlow, Frank. (1999) The Feudal Kingdom of England, 1042–1216. (5th edition) Harlow, UK: Pearson Education. . Bennett, Matthew. (2000) "The Impact of 'Foreign' Troops in the Civil Wars of Stephen's Reign," in Dunn, Diana E. S. (ed) (2000) War and society in medieval and early modern Britain. Liverpool: Liverpool University Press. . in Bradbury, Jim. (2009) Stephen and Matilda: the Civil War of 1139–53. Stroud, UK: The History Press. . Carpenter, David. (2004) Struggle for Mastery: The Penguin History of Britain 1066–1284. London: Penguin. . Chibnall, Marjorie. (2008) "Introduction" in Coulson, Charles. (1994) "The Castles of the Anarchy," in King, Edmund. (ed) (1998) The Anarchy of King Stephen's Reign. Oxford: Clarendon Press. . Coss, Peter. (2002) "From Feudalism to Bastard Feudalism," in Crouch, David. (1994) "The March and the Welsh Kings," in —— (2000) The Reign of King Stephen, 1135–1154 Harlow: Longman. —— (2002) The Normans: The History of a Dynasty. London: Hambledon Continuum. . —— (2008a) The Beaumont Twins: The Roots and Branches of Power in the Twelfth Century. Cambridge: Cambridge University Press. . —— (2008b) "King Stephen and northern France" in Davis, R. H. C. (Ralph Henry Carless) (1977) King Stephen. (1st edition) London: Longman. . Duby, Georges. (1993) France in the Middle Ages 987–1460: From Hugh Capet to Joan of Arc. Oxford: Blackwell. . Dyer, Christopher. (2009) Making a Living in the Middle Ages: The People of Britain, 850 – 1520. London: Yale University Press. . Gillingham, John. (1994) "1066 and the Introduction of Chivalry into England," in Green, J. A. (1992) "Financing Stephen's War," Anglo-Norman Studies 14, pp. 91–114. Helmerichs, Robert. (2001) "'Ad tutandos partriae fines': The Defense of Normandy, 1135," in Abels, Richard Philip and Bernard S. Bachrach.