Tlachquiauco is Barlow's Province 34. It is was located on one of the lost pages of the Matrícula. It has survived as folio 45 (recto) in the Codex Mendoza.The following maps and table are all from Barlow (1949).

Location map. Tlachquiauco is shown in green

Barlow's map of the province.

 

Tributary Pueblos

1. Tlacotepec#
2. Mixtepec#
3. Tlachquiauco
. Achiotlan
... Çapotlan (not located)

 

Modern Location

1. Tlacotepec#
2. Mixtepec#
3. Santa Maria Asunción Tlaxiaco, Oax.
4. San Miguel Achiutla, Oax.
... ?

Key

# Town indicated as a tributary in a source other than the Codex Mendoza.

The appelidos of the modern place names are from Castillo Farreras (1997).

? Location uncertain