In 1840 Borrow's career with the British and Foreign Bible Society came to an end, and he married Mary Clarke, a widow with a grown-up daughter called Henrietta, and a small estate at Oulton Broad in Lowestoft, Suffolk. There Borrow began to write his books. "The Zincali" (1841) was moderately successful and "The Bible in Spain" (1843) was a huge success, making Borrow a celebrity overnight, but the eagerly awaited "Lavengro" (1851) and "The Romany Rye" (1857) puzzled many readers, who were not sure how much was fact and how much fiction – a question debated to this day. Borrow made one more overseas journey, across Europe to Istanbul in 1844, but the rest of his travels were in the UK: long walking tours in Scotland, Wales, Ireland, Cornwall and the Isle of Man. Of these, only the Welsh tour yielded a book, "Wild Wales" (1862).