Ancient egypt? Roman times? Medieval times? Byzantine times? Pre-colonial Philippines? Pre-colonial America?
I think it may have started in the late 1800s at the earliest. I would need a bit more evidence to be convinced that your model of individual to nuclear to extended etc has been a thing longer than a few centuries, vs the vast majority of human life experience being in nomadic hunter-gathering, villages, farmland, and walled city-states. We just had clans which were all our family. A fellow villager wasn't much different than a cousin. The individual and nuclear family, not so much a thing.