thumb|200px|"Hugh Lupus, Earle of Chester, sitting in his parliament with the barons and abbots of that Countie Palatine". Post-1656 engraving by [[Wenceslaus Hollar]]
Hugh d'Avranches ( 1047 – 27 July 1101), nicknamed le Gros (the Large) or Lupus (the Wolf), was from 1071 the second Norman Earl of Chester and one of the great magnates of early Norman England.
Early life and career
Hugh d'Avranches was born around 1047 as the son of Richard le Goz, Viscount of Avranches. His mother was traditionally said to have been Emma de Conteville, half-sister of William the Conqueror, but Lewis (2014) states that the identification was made "on the basis of unsatisfactory evidence" and that his mother is unknown. Keats-Rohan (1999), while accepting the poor quality of the evidence for the traditional account, has nonetheless argued in favour of some relationship existing between Hugh and William.
Earl of Chester
In 1071, Gerbod the Fleming, 1st Earl of Chester was taken prisoner at the Battle of Cassel in France and held in captivity. Taking advantage of the circumstances, the king declared his title vacant. Cheshire, with its strategic location on the Welsh Marches, held county palatine status and the king then granted these powers to Hugh along with the earldom. In that role he would appoint a number of hereditary barons, including his cousins Robert of Rhuddlan and Nigel of Cotentin. and, during his lifetime, founded the Benedictine Abbeys of Sainte-Marie-et-Saint-Sever, Saint-Sever-Calvados, Normandy, and St. Werburgh in Chester as well as giving land endowments to Whitby Abbey, North Yorkshire. Gruffudd was imprisoned by Earl Hugh in his castle at Chester, but it was Robert who took over his kingdom, holding it directly en liege from the king. When Robert was killed by a Welsh raiding party in 1093 Hugh took over these lands, becoming ruler of most of North Wales, but he lost Anglesey and much of the rest of Gwynedd in the Welsh revolt of 1094, led by Gruffudd ap Cynan, who had escaped from captivity.
Norwegian invasion
In the summer of 1098, Hugh joined forces with Hugh of Montgomery, 2nd Earl of Shrewsbury, to relieve besieged castles, pillage Môn, and recover his losses in Gwynedd. Gruffudd ap Cynan had retreated to Anglesey, but then was forced to flee to Ireland when a fleet he had hired from the Danish settlement in Ireland changed sides. Things were altered by the arrival of a Norwegian fleet under the command of King Magnus III of Norway, also known as Magnus Barefoot, who attacked the Norman forces near the eastern end of the Menai Straits. Earl Hugh of Shrewsbury was killed by an arrow said to have been shot by Magnus himself. The Normans were obliged to evacuate Anglesey altogether leaving Gruffudd, who had returned from Ireland, to take possession the following year. Hugh apparently made an agreement with him and did not again try to recover these lands.
Marriage, death and succession
thumb|Equestrian statue of Hugh Lupus hawking on horseback, at [[Eaton Hall, Cheshire|Eaton Hall in Cheshire, sculpted by George Frederick Watts (1817–1904)]]
Hugh d'Avranches married Ermentrude of Claremont, daughter of Hugh I, Count of Clermont-en-Beauvaisis, by whom he had his son and heir, Richard d'Avranches, 2nd Earl of Chester, though he is known to have also had illegitimate children, including Robert, abbot of Bury St Edmunds, Otuer fitz Count and, less certainly, Geva, wife of Geoffrey Ridel.