Dubious about the Duke by Alexa Aston

An affable army colonel who abruptly becomes a duke. A shy beauty who missed her come-out. And two mischievous boys who bring this pair together . . .

A confident Colonel Winston Cutler finds himself a sudden duke when the brother he loathed perishes in a fire. Win returns to London, only to find he has two by-blow nephews to care for—and their specialty is running off their latest governess.
Reserved Seraphina Nicholls returns to England after being stuck in Canada due to war with the Americans. Sera is slated to attend a house party, where she hopes to make a match with a man who is quiet and loyal. Instead, she finds herself volunteering to act as a governess to a neighboring duke’s rowdy nephews.
Sera wins over the boys and is dismayed when she loses her heart to the roguish duke. Win finds Sera appealing but due to her retiring nature, he believes she would make for a terrible duchess. But Sera isn’t shy with him—especially when they are kissing. Win decides no one but this erstwhile governess will make him happy.
Can the outgoing Win persuade a bashful Sera that opposites can attract—and thrive—in a passion-filled marriage?