All three volumes of Two Families by William Bakker, which follows three generations of the eponymous families, each nobility in adjacent and vaguely Marcher fictional towns. The feud that begins via a doomed romance in the first volume is resolved by the marriage of two fiery and headstrong progeny in the third.

They're very good except for a scattering of anti-elven prejudice from the author—not as much as in like 99% of Thedosian novels, probably, but still. Bastien has diligently found most instances and added frowny faces in the margins beside them.