Waldorf, Maryland General Assembly of Maryland by an act changed the name to "Waldorf" in honor of William Waldorf Astor (1848–1919), the great-grandson of John Jacob Astor (1763–1848), who was born in Walldorf, Palatinate, Germany. On July 29, 1908, the city of Plumb Valley in Waseca County, Minnesota, changed its name to Waldorf after Waldorf, Maryland. Once a tobacco market village, Waldorf came to prominence in the 1950s as a gambling destination after slot machines were legalized in Charles County in 1949. The boom lasted until 1968 when gambling was once again outlawed. Its subsequent substantial growth as a residential community began
William Waldorf Astor his collection of statuary and ornaments. In 1906 he gave his eldest son Waldorf Astor and his new daughter-in-law, Nancy Witcher Langhorne, the Cliveden estate as a wedding present. In 1908, he opened The Waldorf Hilton, London in London's West End, to establish an American-style hotel in England. Having become a British subject in 1899, Astor became interested in gaining English social distinction. Among the charities benefited by his gifts were The Hospital for Sick Children, Great Ormond Street (to which he gave $250,000 in 1903); University College, London (including a gift of £20,000 in 1902 for professorships); the Cancer