Emyn Arnen was a series of hills in Ithilien, located south of Osgiliath in Gondor.
After the events of the War of the Ring, King Elessar granted to Faramir, son of the Steward Denethor II, the Princedom of Ithilien and the Lordship of Emyn Arnen (Faramir also maintained the Office of the Steward, even after he tried to surrender it to King Elessar). Emyn Arnen, being the ancestral home of the Stewards of Gondor, became the official home of the Steward Faramir and his descendants.
History
Emyn Arnen was home to a family of Númenórean nobles, from whom came Húrin, chosen by King Minardil of Gondor to be his Steward. Later, Kings of Gondor only chose their stewards from among Húrin's descendants, and eventually the Stewardship of Gondor became a hereditary position with all those holding the title organizing themselves into the House of Húrin.After the events of the War of the Ring, King Elessar granted to Faramir, son of the Steward Denethor II, the Princedom of Ithilien and the Lordship of Emyn Arnen (Faramir also maintained the Office of the Steward, even after he tried to surrender it to King Elessar). Emyn Arnen, being the ancestral home of the Stewards of Gondor, became the official home of the Steward Faramir and his descendants.