On May 20, 1968, the anniversary of the signing of the Mecklenburg Declaration of Independence, Charlotte will celebrate its bicentennial. A bill introduced by Senator Sam Ervin, Jr. and cosponsored by Senator B. Everett Jordan making May 20 \"Charlotte Day\" was signed into law by President Lyndon Johnson. Mrs. Johnson accepted Mayor Brookshire's invitation to come to Charlotte and dedicate the restored birthplace of the 11th president of the United States, James K. Polk, and the Hezekiah Alexander Home, built in 1774. The town of Charlotte was named for the wife of King George III of England, and the county, Mecklenburg, was named for Charlotte's royal house in Germany. Charlottetown, as it was then known, was built on 369 acres donated by Lord Proprietor George Augustus Selwyn and was chartered on December 7, 1768.