The period of time the SCA covers is from approximately 600-1600 AD, with Shakespeare thrown in for good measure. Of course, there's more to it, than just getting all dressed up in garb. First you have to make the garb . In addition to that, everyone needs a persona. A persona is who you are in the Middle Ages.
Some people have much more detail than others.
Some have a generic idea of time periods and location. Others have their whole backgrounds laid out and only wear clothing to match. Neither of them are particularly developed, other than a name. For anyone reading this who knows me, yes, Kiriena is new, though the story is about the same. Kiriena is actually documentable and Katriana is not.