This document provides an overview of key historical events in York, England from Roman times to the 20th century. It discusses events such as the founding of York by Romans in 71 AD, kings being christened in York in the 7th century, Vikings capturing the city in 866 AD, the building of York Castle after the Norman conquest in 1068 AD, and the uncovering of Viking York during archaeological digs in the 20th century. It also provides more in-depth summaries of some individual historical events and figures, such as emperors who died in York and the battles that followed, and King Edwin's christening in 627 AD.