Implied to be the case with the Lost City of Skifander in Girl Genius. When Klaus sees Zeetha has come to Europa, he assumes it's because she's there to kill Klaus' son Gilgamesh, her twin brother. It's not made clear whether he recognizes that she is his own daughter/ Gilgamesh's twin sister (after having split the pair up as infants and run off with Gil), but the fact that he assumes any warrior from Skifander would be sent for the express purpose of tracking down an killing a surviving twin speaks volumes about the society's attitude towards twin births. Additionally, the authors of the comic stated in a 2013 AMA that Skifandrian society doesn't like twins.
None of the details this example depends on have appeared in canon: the comic has never identified Zeetha's father, nor Gil's mother, nor given any indication that they are siblings, let alone twins.
(Zeetha has been introduced as "Zeetha, Daughter of Chump", but it's never been said who Chump was, nor even whether Chump is her mother or her father.)
I gather that it's been stated as Word of God, but I don't think it's wise to list an example that exists only as word of god without any in-text confirmation.
None of the details this example depends on have appeared in canon: the comic has never identified Zeetha's father, nor Gil's mother, nor given any indication that they are siblings, let alone twins.
(Zeetha has been introduced as "Zeetha, Daughter of Chump", but it's never been said who Chump was, nor even whether Chump is her mother or her father.)
I gather that it's been stated as Word of God, but I don't think it's wise to list an example that exists only as word of god without any in-text confirmation.
Edited by PaulA