Sirius
Mary-j-59 has a great essay comparing Sirius and Severus--have you read it? I hadn't thought of this, but you're right--Sirius does fit the pattern on the severus side.
I don't think Quirrell's death can be clearly assigned to Dumbledore; I thought that it was physically touching Harry (with intent to harm, activating Lily's protection) that did it.
I don't think Quirrell's death can be clearly assigned to Dumbledore; I thought that it was physically touching Harry (with intent to harm, activating Lily's protection) that did it.