There are 3 books in the Paksenarrion Series series. The newest book is Oath of Gold which came out in 1989.

1
Sheepfarmer's Daughter

Book cover of Sheepfarmer's Daughter
Paksenarrion Dorthansdotter may be the daughter of a humble sheep farmer in the far north end of the kingdom, but she dreams of so much more. After refusing her father’s orders to do the sensible thing and marry the pig farmer down the road, Paks, runs away to join a…
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2
Divided Allegiance

Divided Allegiance
Once a sheepfarmer's daughter, now a seasoned veteran, Paksenarrion has proven herself a fighter. Years with Duke Phelan's Company taught her weaponry, discipline, and how to react as part of a military unit.

Now, though, Paks feels spurred to a solitary