The Heart of Princess Osra is part of Anthony Hope's trilogy of novels set in the fictional country of Ruritania and which spawned the genre of Ruritanian romance. This collection of linked short stories is a prequel: it was written immediately after the success of The Prisoner of Zenda and was published in 1896, but is set in the 1730s, well over a century before the events of Zenda and its sequel, Rupert of Hentzau. The stories deal with the love life of Princess Osra, younger sister of Rudolf III, the shared ancestor of Rudolf Rassendyll, the English gentleman who acts as political decoy in The Prisoner of Zenda, and Rudolph V of the House of Elphberg, the absolute monarch of that Germanic kingdom. (Wikipedia)
Sir Anthony Hope Hawkins, better known as Anthony Hope (9 February 1863 – 8 July 1933), was an English novelist and playwright. He was a prolific writer, especially of adventure novels but he is remembered predominantly for only two books: The Prisoner of Zenda (1894) and its sequel Rupert of Hentzau (1898). These works, "minor classics" of English literature, are set in the contemporaneous fictional country of Ruritania and spawned the genre known as Ruritanian romance, works set in fictional European locales similar to the novels. Zenda has inspired many adaptations, most notably the 1937 Hollywood movie of the same name. (Wikipedia)