When was this made?
The Chertsey tiles resemble some other secular-themed tiles that remain today in the chapter house of Westminister Abbey in London. Those tiles must have been laid by 1258/9. The Chertsey tiles and the Westminster chapter house tiles display similarities in design and technique, alongside the overall concept of two-tone pictorial tiles laid with substantial inscriptions
Chertsey Abbey suffered from a fire in 1235. It is probable that the famous two-tone Chertsey tiles were part of the rebuilding after that fire. Rebuilding often took decades.