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
John Jacob Astor IV John Jacob Astor IV John Jacob "Jack" Astor IV (July 13, 1864 – April 15, 1912) was an American businessman, real estate builder, investor, inventor, writer, lieutenant colonel in the Spanish–American War, and a prominent member of the Astor family. Astor died in the sinking of RMS "Titanic" during the early hours of April 15, 1912. Astor was the richest passenger aboard the RMS "Titanic" and was thought to be among the richest people in the world at that time, with a net worth of nearly $87 million when he died (equivalent to $ billion in ). John Jacob Astor