The Scholastic site lists four vows: Unbreakable Vow, Everlasting, Blood Vow and another one (can't remember which). I wasn't sure whether the "Blood Vow" was meant to be this or not. Of course the question referred to the Unbreakable Vow taken by Severus Snape in book six, but it mentioned other vows and this might have been one of them (like how a question about Goyle mentioned Crabbe, and one about Dumbledore brought up Fenrir, Bellatrix and Amycus). --Hunnie Bunn (talk) 23:17, November 7, 2013 (UTC)

I don't think that question gives enough information to determine if this is the case or not. Many questions give completely made up answers as false alternates. -- 1337star (Drop me a line!) 04:05, November 19, 2013 (UTC)