Astarael--Banisher
Rid V
Surnames always carry through generations, be the one or one-thousand-two-hundred-and-forty-two. This means your main character, who is the descendant of some ancient character, will share their ancestor's last name. This rule holds true even if the ancestor was a human female, despite the intesting question that would raise.
((That part about the surname is... so true. And yet so stupid. I wonder why so many people do it.))
((It's so that they don't have to waste energy having the characters find out that one character his some other important character's descendant. They share the same last name, after all, probably the same first name,
and the same exact features, almost as if they were being played by the same actor, or something.))
Outside of your main character's immediate sphere of reference, the term "happy families" is an oxymoron. Pick any one person who's family comes into the story at all, and if that character is ready to murder or otherwise contrive the death/s of one or all of their family members, for their family member's money/position/similar, then they are potential victims for murder on those very grounds. And everyone knows that over ninety-eight percent of marriages among secondary characters are held together by Klatchian mist. ((I believe the correct term would be Scottish mist, but I like the Discworld version better, it has a nicer ring to it.))
And I cannot emphasize the importance of this next point enough, even though I've probably said something close to it many times. Any character who is in any way antagonistic, toward your main character or just everyone in general, must turn out to be evil in the end, or to at least do something extremely detrimental to your main character's cause for no better reason than say, spite. No one
ever has a good reason for being antagonistic, (not towards your main character, anyway) and they never leave it at just antagonistic. They
must be
evil!