Richard Henry Dana Jr. (August 1, 1815 January 6, 1882) was an influential American lawyer, writer, and politician from Massachusetts, born to Richard Henry Dana Sr. A descendant of a colonial family, Dana is best known for his classic memoir Two Years Before the Mast, which recounts his experience as a sailor aboard a merchant ship. The book exposed the harsh realities of life at sea and contributed to important reforms in maritime labor. Dana was also a dedicated lawyer and social reformer, defending the rights of the marginalized, including fugitive slaves and freedmen. His most notable legal achievement was successfully representing the U.S. government before the Supreme Court in the Prize Cases, which upheld the Union s naval blockade during the Civil War. In addition to his literary and legal work, Dana wrote several other books, including To Cuba and Back and Twenty-Four Years After. Both as a writer and an advocate, Dana remained committed to justice and social change, leaving a lasting impact on American literature and law.