Forum:Sacred twenty-eight (Pottermore spoilers)

Given the new Pottermore entry, should we assume that all families not listred have muggle heritage?

In cases where there are pure-bloods in other families. (Examples are the Goyle, Brown and Macdogal families), this can be explained by other relatives (aunts, cousins) marrying non-pure-bloods.

--Rodolphus (talk) 17:49, September 22, 2012 (UTC)