Claim: San Antonio La Isla is a municipality in Mexico which was founded in 1603, obtained a municipal status in 1847 and was originally inhabited by the Matlatzinca.
Evidence: San Antonio La Isla is a town and municipality located in the State of Mexico in Mexico. 1603 1847 The area was originally inhabited by the Matlatzinca, then by the Otomi before it was conquered by the Aztec Empire under Axayacatl,while there is oral tradition indicated the area once held the name of "place of Otomis", its first written mention in the Codex of Mendoza has the name "Techialoyan".