The Pathfinder, or The Inland Sea is a historical novel by James Fenimore Cooper, first published in 1840. It is the fourth novel Cooper wrote featuring Natty Bumppo, his fictitious frontier hero, and the third chronological episode of the Leatherstocking Tales. The inland sea of the title is Lake Ontario.PlotThe Pathfinder shows Natty at his old trick of guiding tender damsels through the dangerous woods, and the siege at the blockhouse and the storm on Lake Ontario are considerably like other of Cooper's sieges and storms. Natty, in this novel commonly called the Pathfinder, keeps in a hardy middle age his simple and honest nature, which is severely tested by his love for a nineteen year old young woman. She is a conventional heroine of romance. A certain soft amiability about her turns for a time all the thoughts of the scout to the world of domestic affections. More talkative than ever before, he reveals new mental and moral traits. With the same touch of realism which had kept Uncas and Cora apart in The Last of the Mohicans, Cooper separates these lovers, and sends Natty's romantic interest to the arms of a younger suitor, restoring the hero to his home in the wilderness...James Fenimore Cooper (September 15, 1789 - September 14, 1851) was an American writer of the first half of the 19th century. His historical romances draw a picture of frontier and American Indian life in the early American days which created a unique form of American literature. He lived most of his life in Cooperstown, New York, which was founded by his father William on property that he owned. Cooper was a lifelong member of the Episcopal Church and contributed generously to it.He attended Yale University for three years, where he was a member of the Linonian Society.Cooper served in the U.S. Navy as a midshipman, which greatly influenced many of his novels and other writings. The novel that launched his career was The Spy, a tale about counter-espionage set during the American Revolutionary War and published in 1821.He also wrote numerous sea stories, and his best-known works are five historical novels of the frontier period known as the Leatherstocking Tales. Cooper's works on the U.S. Navy have been well received among naval historians, but they were sometimes criticized by his contemporaries. Among his most famous works is the Romantic novel The Last of the Mohicans, often regarded as his masterpiece, (although it was mercilessly mocked by Mark Twain).