GUILLAUME de Poitou ([937]-Saint-Maixent [end 995/early 996], bur Abbaye de Saint-Maixent[368]). The Chronicle of Adémar de Chabannes names "Willelmum" as son of "Willelmo Capite stupæ" when recording that he succeeded his father[369]. "Ebulus…Lemovicensium sedis episcopus" donated property including "alodum…meum Baidon" to Saint-Maixent "pro remedio animæ…fratris mei Guillelmi, sive pro consolatione nepotism mei equivoci Guillelmi Aquitanorum ducis" by charter dated Jan [965/66][370]. He succeeded his father in 963 as GUILLAUME IV "Fier-à-Bras/FeraBrachia" Duke of Aquitaine, GUILLAUME II Comte de Poitou, lay abbot of Saint-Hilaire-de-Poitiers. "Guilelmus…Aquitanensium dux et cœnobii…Hylarii abbas" donated property to "clericus…Rodgarius" by charter dated Mar 967[371]. "Wilelmus…Aquitaniensium dux et cœnobii…Hylarii abbas" donated property to "Mainardo", at the request of "patruus noster domnus Ebolus, sancte Lemovicensis sedis episcopus atque…beati Hylarii archiclavus", by charter dated Jan 969, subscribed by "Adraldo vicecomes, Arbertus vicecomes, Kadeloni vicecomes…"[372]. At first a powerful duke, he led a dissolute life after the departure of his wife, became increasingly ill and fell under the influence of Madelme, anItalian doctor, whom he rewarded with a vast estate near Fontenay[373]. Duke Guillaume became increasingly religious following the return of his wife in 988, and underher influence the couple made donations to numerous religiousestablishments. "Guilelmus Aquitaniencum dux" founded a hospital near Saint-Hilaire de Poitiers by charter dated Jan 989, subscribed by "Emma comitissa, Guillelmi filium eius, Guilelmi comitis Engolismæ…"[374]. It appears that a reaction to these religious excesses set in, and the duke's wife left him once more together with their older son in 991[375]. Duke Guillaume abdicated in Jan 993 in favour of his son, and retired to the Abbey of Saint-Cyprien de Poitiers, later transferring to the Abbey of Saint-Maixent where he became a monk on his deathbed[376]. m ([968]) EMMA de Blois, daughter of THIBAUT I "le Tricheur" Comte de Blois & his wife Luitgard de Vermandois ([953]-1 Aug, 1004 or after). The Chronicle of Adémar de Chabannes records the marriage of "Willelmum" (son of "Willelmo Capite stupæ") and "filiam Tetbaldi Campenensis…Emmam"[377]. The Chronicle of Saint-Maxence names "filiam Tetbaudi Campanensis…Emmamsive Emelinam"as the wife of "Willelmu duce…Caput Stupæ…filium eius Willelmum"[378]. She inherited property near Vernon in eastern Normandy from her mother which she gave to the Abbey of Bourgueil in Aquitaine[379]. Her dowry in 968 was Chinon. "Vuillelmus dux Aquitanorum" donated property to Saint-Jean d'Angély for the soul of "…uxore mea Emma…" by charter dated [971][380]. She fled Poitou between 976 and 988 because of the adulterous behaviour of her husband[381]. "Ledgardis" donated property to "Sancti Petri Carnotensis ecclesiam", for the souls of "senioris mei…comitis Tedbaldi…patris mei Heirberti, Trecassini comitis", with the consent of "archipresule…Hugone et…comite Odone, filiis meis", by charter dated 5 Feb 978, signed by "…Emma comitissa Pictavæ urbis…"[382]. "Guilelmus Aquitaniencum dux" founded a hospital near Saint-Hilaire de Poitiers by charter dated Jan 989, subscribed by "Emma comitissa, Guillelmi filium eius, Guilelmi comitis Engolismæ…"[383]. "Willelmus Aquitanorum comes et dux et uxor mea Hemma et filius noster equivocus Willelmus" donated property to Saint-Maixent by charter dated Dec 992[384]. "Emme matris eius" subscribed the donation by "Willelmus dux Aquitanorum" of property to St Cyprien, Poitiers by charter dated [990/1004][385]. She confirmed her son's 27 Dec 1003 donation of Bretignolle to the Abbey of Bourgueil, but according to Richard she was still alive when her first grandson was born in 1004[386]. A necrology of Vendôme La Trinité records the death "Kal Aug" of "Emma comitissa, Burgulii"[387]. Mistress (1): --- de Thouars, daughter of ---. Richard recounts that Comte Guillaume IV had adulterous relations with "une jeune femmede la famille vicomtale"when visiting the vicomte de Thouars, whichtriggered his marital separationfrom his wife Emma de Blois[388]. The primary source which confirms this has not yet been identified. Duke Guillaume IV & his wife had [four or more] children