It is possible that it is a combination of two Māori words:
* Ata: Meaning "morning" or "dawn"
* Marie: This is not a Māori word but a French name, meaning "star of the sea".
Therefore, "Ata Marie" might be a name with a meaning related to "morning star" or "dawn star." However, it's important to note that this is a loose interpretation and there is no official or traditional Māori meaning for this combination.