Originally Posted by
TheBard
So far, this seems to be working for me. Playing 6.3 RR/RC, LLP, FTT, Heir ancillary, permanent arrows. Characters become useable at age 5 because of LLP, and you can give them the heir ancillary then (which is a really awesome combination of options). Playing as Aragon, my King was Pedro and his brother Ramiro (I think) was the heir because there were no children at beginning of game. I had the ancillary on the next youngest brother (forget the name off the top of my head), but then I switched it to Pedro's male son (aged 5, first useable). I stupidly let Ramiro get himself killed (by archers no less) in an unsuccessful attack on Valencia and the heirship went to Pedro's son. Now, I assume that was likely to happen anyway just because the game wants to follow primogeniture when it is obvious, but at least it's good to know that the heir ancillary either worked or didn't hurt anything. I'm trying to use it to follow primogeniture exactly throughout the game, so I'll keep you updated on whether that works or not. The LLP mod makes this a lot easier, as without it, the King's son would not have been able to have ancillaries yet (I think he was 10).