Three males between Cassandra and Sybill.
Given the fact that Cassandra and Professor Trelawney share the same surname, I have added in that there must be three male Trelawneys between them. Thoughts? —The preceding unsigned comment was added by HarryPotterRules1 (talk • contribs).
- Very likely, though not certain. Her mother, grandmother or great-grandmother might've pulled a McGonagall and kept her surname, passing it on to their child(ren). Alternatively, they may not have married at all; I'd wait until we have a better insight on the Trelawney family before we put that up on the article as fact. -- 22:45, December 9, 2013 (UTC)