A Long Petal of the Sea by Isabel Allende

From the New York Times bestselling author of The House of the Spirits, this epic novel spanning decades and crossing continents follows two young people as they flee the aftermath of the Spanish Civil War in search of a place to call home.
In the late 1930s, civil war grips Spain. When General Franco and his Fascists succeed in overthrowing the government, hundreds of thousands are forced to flee in a treacherous journey over the mountains to the French border. Among them is Roser, a pregnant young widow, who finds her life intertwined with that of Victor Dalmau, an army doctor and the brother of her deceased love. In order to survive, the two must unite in a marriage neither of them desires.
Together with two thousand other refugees, they embark on the SS Winnipeg, a ship chartered by the poet Pablo Neruda, to Chile: "the long petal of sea and wine and snow." As unlikely partners, they embrace exile as the rest of Europe erupts in world war....