Regency romance 2 families

Girl from one family, shy, bespectacled is befriended by roguish man from second family. He only is friendly with her to set her up for a gag in which she is humiliated. Roguish man’s brother (a duke) marries shy girl, much to her dismay. 2nd book—man compromises sister of duke to plot revenge.

I know that book, I think she is Jane Huxley? And they mention plump way too often. I’ll look for it.

The younger brother is Christian something, and the Duke is always rescuing him. In the next book a friend asks him to help him woo an ice princess but he wants her for himself.

The married and send to a far estate bride comes to town looking wonderful and he doesn’t recognize her.

Found it! The truth about cads and dukes by Elisa Braden. One of the seduced from ruin novels

Touchstone: The Truth About Cads and Dukes