Daughter of the Rainbow - The Longleigh Chronicles, #3

Shy but lovely Lady Iris Longleigh is passionate about only two things-painting and Lord Valls. Shy but lovely Lady Iris Longleigh cares little about her upcoming debut into society. She has no interest in husband hunting and wishes only to spend her time painting at Bellevue Hall. Her mother, the ever-scheming duchess Lady Flora, has other plans. She engages a young man of the nobility, Lord Valls, to paint her daughter's portrait to promote her eligibility.
The two artists are made for each other. However, Lord Valls has a secret he cannot reveal that prevents their marriage. After displaying a scandalous painting of Iris, Valls is offered a choice by the duke-marry his daughter or die!