Sharp Knives and Starlight

~Long, long ago, according to old stories of the Dark Brotherhood, the Night Mother is the wife of Sithis. In the second era, she and Sithis had 5 children. She was told by the Dread-Father to kill their five young children in his name, and after the deed was done, Sithis gave her the honor of being his eternal wife and deemed her the head of the Dark Brotherhood.
~Slightly less long ago, a ginger man was born during the 4th Era, around year 174. That man was Cicero. He doesn't tell anyone about his life before arriving at the sanctuary in Cheydinhal city, Cyrodiil. It's been assumed, however, that he was born in Bruma city, Cyrodiil, and initially joined the brotherhood there.
~ What little we do know of him is as follows: after the sanctuary in Bruma was destroyed by Imperial forces trying to wipe out the Dark Brotherhood, he moved to Cheydinhal, and after the Night Mother's tomb was desecrated in Bravil, Cyrodiil, her body was moved to the Cheydinhal sanctuary, and Cicero was appointed her Keeper. His journals tell of his feelings about the whole situation. Before being made Keeper, he was an extremely successful assassin and loved the work, but keeping an ancient corpse well preserved takes a lot of time. He was allowed one last contract, which was an unnamed jester.
~Cicero's journals tell us that he was driven to madness by this final kill, for soon after the Cheydinhal sanctuary was sacked, and he fled to Skyrim with Lady Death's corpse. The isolation caused him to hallucinate the jester's laughter and his songs. It's stated that the unnamed jester never once stopped laughing.