Mathieu Bellamont Mathieu Bellamont is a Breton assassin who resides within the cellar of the Anvil Lighthouse . He is the primary antagonist in the Dark Brotherhood quests . He is a long - serving member of the Dark Brotherhood , having joined the organization when he was a boy . Background . Bellamont joined the family with the sole intention of destroying it as revenge for the murder of his mother years earlier . His dark plans finally came to fruition when he was appointed to serve on the Black Hand as the Silencer to Alval Uvani . Using his position on the Black Hand , as well as the unknowing aid of a particularly ambitious family member , Bellamont proceeded to wreak havoc on the Brotherhood , killing off one Black Hand member after another . Biography . Early life . Mathieu Bellamont was raised by his mother from birth , and the two apparently shared a very close bond . Bellamont ' s parents appeared to have separated , and his father , angered by this , contacted the Dark Brotherhood in order to exact his revenge . The Night Mother heard the prayers of the vengeful man , and sent her child Lucien Lachance to tear apart the young family . Lachance observed the Bellamonts for some time before entering their home and proceeding to behead the hapless mother . Mathieu was able to escape death by hiding under his bed , but the sight of his mother ' s severed head drove him insane . He swore that day that he would destroy the Night Mother , the Dark Brotherhood , and in particular Lucien Lachance . Welcome to the Family . Consumed by revenge , madness and grief , young Bellamont set plans in motion that would change the Dark Brotherhood forever . He began his vendetta with his father ' s beating heart , thus earning the attention of the Night Mother ( who observed Bellamont ' s murder ) . Later that night Bellamont received a visit from none other than Lucien Lachance . Unaware of Bellamont ' s true identity and intentions , Lachance embraced him into the " family " like a brother . Mathieu was initiated as a murderer at the Cheydinhal Sanctuary where he quickly gained a reputation as one of the most ambitious family members the Brotherhood had ever produced . As well as earning the attention of the Black Hand , Bellamont also developed a relationship with a fellow family member by the name of Maria . Bellamont loved her , and hoping that they could build a real family ( as opposed to the Brotherhood ' s twisted take on love ) revealed his plans to her . Maria was Dark Brotherhood through and through however , and was disgusted by his treachery , as well as his relationship with his dead mother . She rejected him , and in his fury he killed and mutilated her , later remarking that there was nothing left of her body to discover . Having lost sight of his originally well - structured plan , Bellamont began to cut a bloody swathe through the family , killing many of his brothers and sisters and burning the corpses . It was only when Blanchard , most likely the very Speaker under whom he served as a Silencer , was murdered that the Black Hand suspected something was amiss and put out the word that the Brotherhood had been infiltrated . The Black Hand . Years later Bellamont continued to kill unnoticed amongst the Brotherhood . Using his position in the Black Hand , as well as the unknowing aid of a particularly ambitious family member , Bellamont proceeded to wreak havoc on the Brotherhood , killing off one Black Hand member after another . The remaining Speakers gathered at Applewatch Farm , brutally torturing and killing Lucien Lachance who was believed to be the traitor . The Hand then made its way to Bravil in order to consult the Night Mother on the Black Hand ' s future . The traitor saw his chance and made to attack the Night Mother , to his dismay however the ethereal specter of the Brotherhood ' s matron could not be harmed by physical damage . At last the Black Hand saw its true enemy and the remaining two Speakers killed Bellamont , finally bringing an end to his madness . Personality and traits . Mathieu Bellamont was functionally insane . Witnessing the murder of his mother by Lucien Lachance severely unhinged him and filled his head with little beyond thoughts of vengeance , murder , and , on some occasions , suicide . However , he was very calculating and patient , having kept his plans for revenge very secret for so long . Bellamont kept a diary from the beginning of his time with the Dark Brotherhood which he wrote using the blood of various victims , whose bodies he kept stored in his cellar home , along with his mother ' s head , which he talked to , and believed spoke back to him . If his mother ' s head is taken from the Anvil Lighthouse basement in the quest " Following a Lead , " then dropped on the ground in Applewatch , Mathieu Bellamont has some unique dialogue . Ultimately , he struggles to properly speak as he is distracted by the sight . Bellamont despises the Dark Brotherhood and what it does . His ultimate goal was to ' kill ' the Night Mother and destroy the Dark Brotherhood . He has managed to retain enough stability and humanity to fall in love with Maria , but even that was lost to the Dark Brotherhood , acting as the final nail in the coffin of his sanity . Interactions . Following a Lead . The Hero must now travel to the city of Anvil . Once there , they should wait near the barrel behind the statue in the pond , and see who comes to set up this fake dead drop . They must then confront this person and find out why they ' ve been tampering with the contracts . Honor Thy Mother . After Lucien ' s death by the Black Hand , Arquen suggests that the Hero and the remaining members meet with the Night Mother to discuss the next steps for the Dark Brotherhood . The Hero is to speak with Arquen between 12 am and 3 am in Applewatch . If , while in Applewatch with the remaining members of the Black Hand , the Hero drops Mother ' s Head on the ground , Mathieu will say , " " What . . . What is that ? Is that a . . . a head ? No . . . No , it can ' t be . . . I . . . Um , Sorry , Speaker . . . I ' m . . . distracted . . . " "