The Man Of My Dreams Series by Miriam Minger

Banished to the English countryside in order to run the family mines and settle down with a sensible wife, playboy Lord Donovan Trent is amazed when Corisande Easton arrives to confront him about mistreating his workers.

Attempting to seduce reckless Lindsay Somerset, Jared Giles, the Earl of Dovercourt, abruptly leaves London when he realizes that he has unexpectedly fallen in love with her, but Lindsay uncovers his secret identity as the notorious pirate Golden Phoenix.