The Lauder Greenway family is a Scottish-American family whose influence on, and involvement in, American political and economic affairs dates from the 1640s through the contemporary era. Their primary contributions have been in the sciences, government, and intelligence. The most notable members are George Lauder and his "cousin-brother" Andrew Carnegie. They co-created the Carnegie Steel Corporation, the forerunner to U.S. Steel, and subsequently became two of the richest men in the world.