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-glucksburg -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