Duluvin Sora Mathanith
Thought I mentioned him in Jubilee Summer, during the scenes with Evelis... or maybe in Court, when Velederien gets news from home--look that up
The "Sora" heir, who likes to flaunt himself and promised a swordplay exhibition at the summer court. "A little in love with himself." But "very dashing."  Very briefly the Mathanith heir before his raking got him in trouble, and then he was reduced again to inheriting only Sora's lands.
- Girl on Fire, Chapter 27