It's time for a discussion about Snape and the Princes. Was Eileen the last? Did she fall out with her family for marrying a Muggle? Were they an 'old wizarding family'? They don't show up on the Black family tree. There seem to be no others mentioned. How did she go from captain of the Gobstones team to unhappy housewife. Or did she? Did she hide her magic from Tobias? Snape certainly knew he wanted to be a Slytherin by the time he was ten or so. For that matter, is it common for wedding and birth announcements to make the paper? As always, if I've forgotten something important, feel free to expand as you see fit.
(And no, I'm not discounting Lily's love for Harry. But she would never have had a choice if it were not for Severus's love for her.)