|"Are you a wizard or not?"
The title of this article is conjectural. Although it is based on canonical information, the actual name is conjecture and may be supplanted at any time by additional information released from canonical sources. If this occurs, please move this page to the appropriate title.
When Isobel became romantically involved with a Muggle neighbour, Robert McGonagall, she knew her parents would not approve, and thus she chose not to tell them of the relationship. Eventually, the young couple eloped, provoking the Rosses' anger to the point they completely severed ties with their daughter.
- Pottermore (Mentioned only)