Lee, I, or Yi is the second-most-common surname in Korea, behind Kim. As of the South Korean census of 2015, there were 7,306,828 people by this name in South Korea or 14.7% of the population.
A memorial for the founder of the Gyeongju Yi clan
The Jeonju Yi family performs rites (jongmyo jerye) to honor their ancestors in an annual ceremony which has been declared an Intangible Cultural Heritage by the Korean government.
Korea has had administrative districts that can be considered provinces since the 7th century. These divisions were initially called ju in Unified Silla and Later Baekje, and there were nine in total.