S. M LaViolette
Masqueraders volume 2
To protect herself from her guardian, Duchess Benedicta de Montfort has no choice but to disguise herself as a boy and takes on the persona of Ben Piddock, a postilion on the estate of the new Earl of Trebolton. Jago Crewe, the new Earl, sees through her disguise and develops feelings for Benedicta as they work together to keep her safe.
2) The footman
Masqueraders volume 1
"Lady Elinor's arranged marriage cured her of all romantic notions. Now a widow, all Elinor wants is to rebuild her life--without a man in it. Stephen Worth is no longer the impoverished footman who lost everything thanks to Elinor's actions. His sole focus now is revenge. And if that means ruining the lovely Elinor in the process? So be it."--Publisher's description.