in the novel Illusions of Victory one character remarks that changing one's citizenship on Solaris is as easy as moving to a new district. obviously there would be legal stuff involved so that remark was at least partly exaggeration, but i suspect that becoming a combine citizen or a League citizen or a Davion citizen, etc would be a lot easier when you their enclaves are all part of one city, and by moving into those areas you could probably simplify the paperwork.
Well, again, when it's less a question of where you're a citizen of then who you're a subject of... yeah changing "citizenship" is pretty much just moving to a new fief with a new lord. Or in the case of billions of people across the Inner Sphere: have a new lord claim the same land you've lived on without you moving at all.
Alright Tai... explain this.
3080... your a Clan Freebirth MechWarrior that just so happens to be on Solaris... you hooked up with a another Freebirth of the opposite gender, a baby is born because both of you are assigned to duties here for 2 years... is the baby Lyran or clan sibko?
Ok caveat up front: the Jihad and its immediate aftermath is the one era of BattleTech lore I don't feel I like a super expert on. Accordingly, I'm going to answer as if the question didn't include that specific year as a context.
I would say that "generally" the kid's allegiance is owed to whoever is owed the raising parent(s). If the baby is born between two offworlders, one of three things is going to happen. Note that I'll save the Clan allegiance wrinkle for a 2nd stage of the answer:
1) neither parent "keeps" the kid and it's left onworld for orphanages (or whatever the world has) to sort out. In this case, yes the kid is raised as a native to that world.
2) one parent keeps the kid, and the kid is raised as an expat of whatever faction that parent is. (essentially an "Army Brat")
3) the parents decide to stay together and both keep the kid. Too many variables to give a neat answer for every case, but generally if the family is sticking together they're going to probably have to settle in to observing one liege lord or another. However certain contexts might permit a "mixed" factional family. They'd have to be rather mobile (e.g. spacers, mercs, etc) because if they put roots down then by default they're subjects of whoever controls the place they put roots down. But even spacers can end up as subjects of a neo-feudal lord who happens to have their spacecraft as his fief...
Now, Clanners are from a legit different civilization than the Inner Sphere. It's deliberately broken from the Neo-Feudal model, so that complicates the answer. In the case of the Clans, it's very much like being enlisted in a post-conscription military. You have to want to be there. You're given every opportunity to GTFO if you don't like the rules; the Dark Caste is right over there waiting for you if you don't like being told what to do and how to do it. So a child born of freebirths would, if kept by one of the parents, probably be raised however Clan kids are raised, but in an expat context. The kid would have to pick one Clan or the other and test in to the Clan when he's of whatever the appropriate age would be, and he'd have to continue choosing to remain Clan amid the temptations of "soft" life as a Sphereoid.
Lastly, the Freebirth parents, depending on the Clan, might conceivably have to give up their positions as Warriors in order to raise children.