The phrase "eighth century" refers to a period of time that occurred 700 to 799 years after the start of the common era, also known as AD. Full definition
So said a wise old bird named P'ang in eighth century China. (religion-online.org)
This breed descended from the St. Huberts Hound of eighth century Belgium. (petcentric.com)
We want to know whether Isaiah of Jerusalem (eighth century B.C.) wrote the entire Book or whether the different styles, vocabulary, and concerns indicate additions to it. (religion-online.org)