The Ransomed Bride — Elizabeth Lowther

A small brown wren in the midst of a golden family, Sabrina had always known that her brother Giles was a fool. What she hadn't expected was for that fact to affect her life so drastically. The periodic skirmishes between England and France had led to Giles Corbyn's capture in Brittany by Ronan Guennec, the Seigneur de Plou-Aven. Now in 1405, after two years of negotiation, Sabrina found marriage to Ronan and her dowry were part of the ransom deal. But Giles had described a golden sister, and this wet bedraggled girl on his doorstep was not Ronan's idea of a wife.