It all sounds possible, but at the same time, with the exception of the Emperor, polygamy sees no mention throughout the series. The series has bent too many rules and incorporated too large a jumble of real world cultural and historical references for us to pin it down to any one frame (Victorian England) basis.
I would presume inter-house rivalry to exist however. The siblings obviously don't always get along, while some get along as if they were a real family.
I'm sure some diligent fic writers and forumers (Animesuki) might answer some of your more detailed questions regarding history and cultural background for the series, since the producers have shown to be rather lazy when it comes to doing their research.
(no subject)
I would presume inter-house rivalry to exist however. The siblings obviously don't always get along, while some get along as if they were a real family.
I'm sure some diligent fic writers and forumers (Animesuki) might answer some of your more detailed questions regarding history and cultural background for the series, since the producers have shown to be rather lazy when it comes to doing their research.