Complex sentence: Lying within the historic boundaries of County Durham, the villages are first recorded in print in 1170, and evolved from the words "Bold" or "Botl" meaning a building and "dun" meaning a hill.
Split into simpler sentences: Lying within the historic boundaries of County Durham, the villages are first recorded in print in 1170. Their names evolved from the words "Bold" or "Botl", meaning a building, and "dun", meaning a hill.