Stories describe michigan's first governor, lewis cass, signing a treaty with the chippewa in 1819 and resting nearby with companions under a swamp oak a few miles north of detroit. cass told the story of prince charles ii, who took refuge in 1651 under a mighty oak tree after the battle of worcester and lived to be crowned king. cass later designated the locality, including the southernmost townships in oakland county, as royal oak. this sector became a village in 1891 and a city in 1921. strong roots have helped the "city of trees" maintain its viability through the years. home to william beaumont hospital, assorted high-tech graphic and sound studios, and a world-class zoo, today royal oak draws people into its pedestrian-friendly downtown for an eclectic mix of bars, sidewalk cafes, boutiques, theaters, and upscale lofts."