When did Maria of Antioch - pretender die?

There is no historical record of a "Maria of Antioch" who was a pretender. It's possible you might be thinking of a different person, or a fictional character.

Could you please provide more information about who you are referring to? Knowing any additional details about her, such as her time period, family connections, or the specific claim she was making, would help identify the correct person and provide an accurate answer.