Olga Constantinovna of Russia

Born into the Romanov dynasty on 3 September 1851, Olga Constantinovna was the oldest daughter of Grand Duke Constantine Nikolaievich and grew up between Saint Petersburg, Congress Poland, and the Crimea. She married King George I of Greece in 1867 at sixteen, initially uneasy in her new kingdom but soon channeling her energy into social work — building hospitals and schools, though her push for a more accessible Greek translation of the Gospels provoked riots from religious conservatives. After George's assassination in 1913, she returned to Russia and ran a military hospital in her brother's…