Greene Square was laid out in 1799 and is named for Revolutionary War hero General Nathanael Greene, an aide to George Washington. A native of Rhode Island, Greene commanded southern forces during the Revolution, and after the war settled at Mulberry Grove, an estate fourteen miles (21 km) above Savannah. Greene, along with his son, is actually buried in Savannah's "Johnson" Square. Greene Square was once the center of Savannah's African-American community. On the northwest Trust Lot is Second African Baptist Church, the site where Union General William Sherman famously announced Special Field Orders 15, better known as "40 acres and a mule". Green Palm Inn (two seamen's cottages, ca. 1897) is on the square. The square is located on Houston, between State and York Streets. Before the American Revolutionary War, State Street was named Prince Street.