Talk:Cassiopeia Black

Slytherin
Since we know that Dumbledore was teaching by the 1910s (to teach Newt) and Slughorn began around the same time, can we say that he would have taught Cassiopeia Black (who would have begun in 1926, when Slughorn was definitely teaching!) -- thus definitely making her, Pollux and Dorea Slytherin wizards along with every Black after them? If so, can we change the infobox? --HarryPotterRules1 (talk) 12:06, September 15, 2016 (UTC)