The Gift of the Marquess by Darcy Burke

The Marchioness of Darlington wants nothing more than a houseful of children, but after three years of marriage Poppy has given up hope. When she learns her husband doesn’t share her sense of loss, Poppy tries to soothe her aching heart by helping at a local institution for single women and mothers. But the arrival of an expectant mother only reignites her longing, driving the wedge between her and Gabriel deeper.
After losing his mother and sister in childbirth, Gabriel, the Marquess of Darlington, is secretly glad his wife hasn’t been able to conceive. He can’t bear the thought of losing her, not even to achieve their dream of having a family. Desperate to prove his love, Gabriel makes a shocking proposition. It’s a risk, but if he can overcome Poppy’s fears and hesitation, he can give her what she wants most for Christmas.