The Great Gubal Library has a book on Lady Amandine which is chonrologicly wrong?

[FJerome]

Aha! Thank you very much. Turns out that's the only mention of it, too. I feel like it's the things in the most obvious places that easiest slip my mind, sometimes, lol. Amandine could easily have been basic Gridanian Duskwight, they're just much fewer in number than the Wildwoods since the post-Gelmorran schism. Duskwights in general seem to be pale because they never returned to the above-ground way of life and spurned the city-states. My first guess is that Amandine is just one of those that returned to the fold, so to speak.

The thing is we've seen Isghardian Duskwright nobles . . . well, okay, we've seen Jandelaine and his brother Guillesfresne, we know that they're from a branch family of House Dzemael, and while we haven't seen any of the main branch of House Dzemael directly we do know that they were building themselves a swanky fortress within natural caves before all those voidsent showed up and ruined everything.

ETA: That said in the flashback to the Knights Twelve the Dzemael ancestor is clearly Wildwood, so if there is Duskwright blood in the main line it married in later.