And that's just in my primary game save. I have to point out, that I don't make a regular rotation. I pop over to the other households to make certain children are born that are meant to be born via the storyline in my head. Also, I noticed that the second child (YA, at the time) had come upon his birthday making him a full Adult. So, in my need to keep their birth order, I went around to his siblings to make certain all was well. It wasn't, even though I have aging on for all. His brother had 42 days (I think it was) left in his Adult status, to his next younger brother's 43. I used MCCC to adjust the 'second' child in the family. (I aged him down to YA and them immediately aged him right back to Adult. He's now a day younger, as he was when a teen.) Then when I popped over to the third child, he had, miraculously, just aged up to Adult. Yay, something was working. LOL Then I checked on their only sister, child number four. She was two days away from aging up, just like her three sisters-in-law. Yeah, the guys married triplets. (This after seeing how far into her YA years the one in my main household was, and making the rounds to get the triplets back on track, that is.)
I do pretty much the same thing in my ancestral save. I have four households in that one, so far. The eldest two kids from each of the primary households; (the Sevier household and the Hawkins household) are married. (Yes, they married young. 15 and just 16 but they made it just fine.) The next to marry will be his next younger brother, but I haven't even created his bride in CAS, yet. They married five years after John and Sarah. I don't intend to play all of these households, either. Just enough to keep with their timelines and to provide family to interact with.