Given the question: - issue is princess nina princess xenia    - death place is athens , kingdom of greece    - title is grand duchess maria georgievna of russia    - mother is olga constantinovna of russia    - spouse is grand duke george mikhailovich of russia perikles ioannidis    - death date is 14 december 1940      - house is house holstein-gottorp-romanov -lrb- by marriage -rrb- of schleswig-holstein-sonderburg-glücksburg -lrb- by birth -rrb- house of    - titles is '' '' hih '' grand duchess maria georgievna of russia '' hrh hrh '' princess maria of greece and denmark '' princess maria , mrs. perikles ioannidis    - father is george i of greece    - birth date is 3 march 1876      - image size is 225px    - image is princess maria georgievna -rrb- . jpg maria of greece and denmark -lrb- grand duchess    - birth place is athens , kingdom of greece    - religion is eastern orthodox    Given the details above, guess who could this information be about.
The answer is:
princess maria of greece and denmark