Thread:Alfirejones/@comment-3406131-20171201225735/@comment-3406131-20171201234704

On such stuff, I tend to look for issues that are susceptible to add a "framework": Major events, dates, locations.

For example, in that case, using the Tuatha de Danaan entries in handbooks (starting with ), the Marvel Atlas Vol 1 issues for Celtic (Ireland) or former celtic countries (UK, France, Belgium, maybe Germany, Switzerland and Spain), and historical issues.

Also:
 * Always use references
 * Never extrapolate from a comic reference to something bigger happened in real life/history (even if it's "common knowledge")
 * No unreferenced-in-Marvel material that is Wikipedia/common knowledge/etc.