Mollie Lovell Series by Lesley Jepson

Believing her fiance Gregory has been killed in a shipwreck, Mollie Lovell travels to Italy to make a new life. Promised by adventurer Amilcare Passavente that he will make her the Duchess of Nona, she is befriended by Fiametta, mistress of Cesare Borgia, and becomes unwittingly involved in an assassination plot. Will she pay the ultimate price, or will Gregory, still alive and searching for the woman he loves, arrive in time to save her from the wrath of the enemies who hate Duke Valentino?

Safely back from Italy with husband Gregory, Mollie Lovell's life returns to normal. Now a case of mistaken identity leads to Greg being thrown into Launceston gaol for highway robbery . Can Mollie prove his innocence, or will Sir Tyco Brocklebank sentence him to hang? How will Amelia, Sir Tyco's niece and trapped in an unhealthy relationship with her tyrannical uncle, escape to her own happiness? And why does Greg's brother need to keep their sister's betrothal such a secret?