Searching for 1800s England manor stories

I remember reading a set of books timed in the 1800s or something. The background is a typical English manor, landlords, horse carriages.

Heroine is typically a young lady working as nanny or an impoverished by circumstances noble woman. There is a moody or mysterious hero.

I read them as Ebooks. But the stories were written by a contemporary author.

Please help me identify the titles.