Lenmarkee, former Andrew Mellon estate - Andrew Mellon called his Tudor house on Woodland Road, Pittsburgh, Pennsylvania, Lenmarkee, but the name's origin is unknown. Today, Chatham College students know it as the Mellon Center administration building. Andrew William Mellon (1855–1937) was an American banker, businessman, industrialist, philanthropist, art collector, U.S. Ambassador to the UK & US Sec. of the Treasury 1921–32. His wealth peaked at around $300–$400 million in 1929–1930.