An alternate story says the Inn, first called Berry's Tavern, got its name to lure in Prussian mercenaries who spent freely. It was named in honor of Frederick the Great, but became known during the Revolutionary War as a center of food and drink. The King of Prussia Inn, built in 1719, captures the historical flavor of the township. The township's incorporation dates to 1713 when the King of Prussia Inn, the Bird-In-Hand Inn in Gulph Mills, and later the Swedes Ford Inn were required to pay 6 shillings to the Pennsylvania legislature for licenses. Merioneth is an English-language translation of the Welsh Meirionnydd, itself named after Meirchion (or Meirion), grandson of Cunedda Wledig (b. The name Merion originates with the county of Merioneth in north Wales. King of Prussia also contains a major office park hosting firms such as Lockheed Martin and GlaxoSmithKline. The township is the home of the King of Prussia mall. The westernmost part of the township comprises the largest part of the 1,300-acre (5 km 2) Valley Forge National Historical Park. Located 16 miles (26 km) from Philadelphia, it consists of the villages of Gulph Mills, King of Prussia, Swedeland, Swedesburg, and portions of Radnor, and Wayne. The population was 33,613 at the 2020 U.S. Upper Merion Township is a township in Montgomery County, Pennsylvania.

Lower merion township zoning map