The House of Lorgh was a Great House of the Klingon Empire. It was led by Lorgh, an Imperial Intelligence agent and old friend of Mogh, son of Worf. When Mogh and his wife Kaasin were killed by Romulans on Khitomer, Lorgh took their younger son Kurn into the House, and rasied him as his son. Kurn was later informed of his true bloodlines during his Age of Ascension ceremony, but officialy remained a member of the House of Lorgh until the Klingon Civil War of 2367-2368. (TLE novel: The Art of the Impossible; TNG episodes: "Sins of the Father", "Redemption")