Nope, that’s why I asked It’s just that the idea of having an affair gives a lot of room for drama, and this game is going to have lots of it.
Who inherits is the olderst suitable heir, who is usually the oldest child; Datura was the heir, but pretty much eloped with mother dearest. That didn’t please his parents, who even though didn’t disinherit him (thus making it possible for the MC to be the next Head of the Nightshade) they cut all contact with him.
That kinda left him with just the… honorary title of “Lord” (because all the others went to his little sister), thus leaving none (real) for the MC, so if they don’t make a move, they risk becoming thorns. Which ain’t nice.
It’s different than with the MC; Maetthere and Rhona are both kids of Caelan (Lord/Duke Faerwald), but the MC is the child of Datura, who wasn’t the current holder of the position of heir/Head of the family (thus making him “second in line” to inherit). If something happened to the Faerwald heir, Maynard, Maetthere would 100% become the heir then, but in MC’s case, even if their cousin died that doesn’t guarantee that they would take their position, because they would still carry Datura’s stigma.
Since I’m making this world different than the real world, I’m changing a lot of things; the oldest kid doesn’t get all of their parents’ titles; in case they have two or more kiddies, they distribute them (if they have enough; if they don’t, the other children are named Lords/Ladies/Lieges).
Following this explanation, in the Faerwalds’ case, Maynard would get the title of Duke, whereas Maetthere would get Marquess, and Rhona a Countess. Since Coriander is the daughter of a previous relationship of the current Lady Faerwald, she won’t get any titles. What a messsss, I swear I will make it understandable in the game.
The MC’s grandparents didn’t keep in contact with their oldest son, so they missed a lot. They attended his funeral and knew of the MC’s existence, but weren’t very aware of Aquilegia’s horrible management. They expected the MC to get their Efflorescence like everyone else, but surprise! They didn’t. So they helped when they were 21 (that’s from where I’m getting the money, 'cause mother dearest is terrible when it comes to money).