Push Not The River by James Conroyd Martin is historical fiction set in grand style in late 18th-century Poland. Combining personal and political conflict, the book is based on the unpublished diary of Countess Anna Maria Berezowska. Readers enter a romatic world of aristocrats and peasants, patriots and traitors against the backdrop of castles and manor houses.
Having Polish ancestors, I enjoyed this book immensely. And if you enjoy Push Not The River, you'll probably also enjoy the sequel Against a Crimson Sky.
