Chapter 5-6 The Noble and Most Ancient House of Black

• They have returned to their rooms. Ron throws some Owl Treats to Hedwig and Pigwidgeon. Harry, Ron, Fred and George discuss what they have heard. They wonder what the 'weapon' is and who's got it. George says it's not necessarily big, as 'size is no guarantee of power'; like Ginny, who is smaller, and she has a mean Bat-Bogy Hex.
• Next morning George wakes Harry. Mrs. Weasley needs help with the Doxys and there's a nest of dead Puffskeins under the sofa. Hermione, Ginny and Fred will also help with cleaning out the doxys with Doxycide.
• Sirius has been feeding Buckbeak who is kept in his mother's bedroom. He checks the writing desk, peers through the keyhole and says he's pretty sure it's a Boggart.
• Mrs. Weasley is consulting "Gilderoy Lockhart's Guide to Household Pests" and they start cleaning out the curtains. Fred pockets a Doxy and quietly explains to Harry that they want to experiment with its venom for their Skiving Snackboxes, sweets which make you ill so you can get out of class. They already have Puking Pastilles, Fainting Fancies and Nosebleed Nougat. Mrs. Weasley says they'll do the dusty cabinets beside the mantelpiece later. They contain daggers, claws, a coiled snakeskin, silver boxes inscribed in some language and an ornate crystal bottle full of what seems like blood.
• Kreacher walks into the room, talking aloud as if nobody can hear him. Sirius asks what he's doing and finds out Kreacher has been trying to steal stuff again to hide it before it gets thrown out. It was a tapestry he was after.
• Sirius explains to Harry that the tapestry shows the family tree of The Noble and Most Ancient House of Black. He's not on there anymore, as his mother blasted him off after he ran away from home and then stayed at Jame's, Harry's father's house until he was seventeen. Then he got his own place with gold he got from his uncle Alphard, who has also been taken off the family-tree. Sirius Hated his family with their Pure-blood mania. The tree also shows his brother Regulus Black who died about fifteen years ago. He used to be a Death Eater. Sirius's parents never were Death Eaters but were in favor of purification of the wizarding race, getting rid of Muggle-born and Mudbloods and having pure-bloods in charge. Regulus was killed by Voldemort or, more likely, on his orders. Sirius shows Phineas Nigellus on the tapestry, Sirius' great-great-grandfather, who used to be Headmaster of Hogwarts. He also shows the names of Araminta Meliflua, cousin of his mother's, Aunt Elladora, who started the family tradition of beheading old House-elves. Tonks is also related. She's the daughter of his favorite cousin Andromeda who married with a Muggle-born named Ted Tonks. Andromeda is sister of Bellatrix and Narcissa, wife of Lucius Malfoy and mother of Draco. Sirius and Mrs. Weasley are also cousins by marriage and Mr. Weasley is something like his second cousin once removed. Harry also sees Bellatrix is married to Rodolphus Lestrange, both of them are in Azkaban, as well as Rodolphus's brother Rabastan. Harry remembers having seen them in Dumbledore's Pensieve.
• Sirius doesn't like the house because of his family, but it's good for Headquarters since it's Unplottable and Dumbledore also added his protection. Dumbledore is Secret-Keeper for the Order.
• Later they clean out the cabinets. Sirius gets bitten by something containing Wartcap powder. He smashes something with many legs with a book called Nature's Nobility: A Wizarding Genealogy. They also see an Order of Merlin First Class, which Sirius's grandfather 'won'.
• Some days they continue 'cleaning' the house, throwing away Black family possessions. Tonks finds a Ghoul in an upstairs toilet.
• Harry still sleeps badly, having dreams about corridors and locked doors. The next day will be Harry's hearing.