A Crowning Mercy by Bernard Cornwell

In a country at war, a secret inheritance reveals a dark conspiracy . On a sunlit afternoon in seventeenth-century Dorset, a young girl falls in love with a stranger. But when her Puritan brother tries to force her into an unbearable marriage she flees, taking with her only the gift left to her by her unknown father, a gold pendant sealed by an engraving of an axe, and the words: St Matthew. One of four intricately wrought seals - each holding a secret within - it can, when combined with the other three, bring great wealth and power. This power is her true inheritance - but it's a perilous legacy others will kill for .
Binding: Paperback / softback