Reo is of Japanese origin, derived from the kanji characters '露' and '王', which mean 'dew' and 'king' respectively. It signifies elegance, simplicity, and royalty. Reo gained popularity in Japan after being used by author Jun'ichirō Tanizaki for a character in his 1924 novel 'The Secret History of the Shogun'. The name has since been associated with beauty and sophistication.
"Reo experienced its peak years of popularity from 1915 to 1924, with the highest number of births recorded at 18 in 1917. After that, there was a steady decline until it reached its lowest point in 1932 and again in 1945 with only 5 births each year. The name saw another spike between 2007 and 2016, with the highest recent figure of 16 births in 2019."