Mecheye
An update - I found the boundaries for this one!

Its been given as the area bounded to the North by Armitage, South by North Ave, West by Pulaski, and East by Central Park. Essentially a perfect 160 acre platt.

Sourced by the "Local community fact book for Chicago, 1950", Page 98

There are several versions of this book published over the 1900's, each with slightly more or slightly less information than previous editions. It has information on the nearby Simon's neighborhood to the East as well.

Problem is that most of these neighborhoods are more or less "defunct" since they are old settlements that existed before incorporation, and did not have enough staying power to become a proper neighborhood or community area.

I'm perfectly fine with including these here because some o them, like Simon's, have historical value (Simons Park), and in fact I'm going through the effort of documenting the boundaries of all of these areas because I'm a masochist. However an additional class of location should be created to indicate that a certain location is "historical", or "defunct", or "archived", so as not to confuse poor sods like myself with seemingly randomly created neighborhoods!