The Duke Trilogy (Ranney)

Though raised as a gentleman's daughter, Lorna Gordon is obliged to take a position as an upstairs maid at Blackhall Castle when her father dies. Alex Russell, the Duke of Kinross, is the most tempting man she's ever seen - and completely unattainable until, at a fancy dress ball, Lorna disguises herself as Marie Antoinette and pursues an illicit tryst, with scandalous consequences.

For years Martha York has been fascinated by a man she's never met - Jordan Hamilton, the new Duke of Roth and protégé to her inventor father. Could the elusive gentleman possibly live up to his brilliant letters? When Martha travels to his estate to carry out her father's last bequest, she discovers that the answer is a resounding yes, for the duke's scientific mind belies a deep sensuality.