Az: Aztlan date

[Marcos Ochoa (by way of "John F. Schwaller" <schwallr@selway.umt.edu>)]

> Aztecs is used in the early colonial sources to mean people of
> Aztlan. Aztlan in this context means the mythical homeland of the
> people who in historical times were known as the Mexica.  So
> Aztecs (or more properly Azteca) as so used refers to the Mexica
> (and others) in a mythical era before the beginning of history.
> ...
>
> LH Feldman

We were raised to believe Aztlan was real. Only in euro-centric
sources did I learn of the so-called myth. Where/how did this
myth-thing originate?

-Marc.