There's a Japanese manga for girls that has a plot where the heroine becomes the Pope, it seems to be medieval and foreign, may I ask which one is it?

It feels like Chie Saito's Flower Crown Angel, where the heroine has silver hair and later becomes the Pope~

Introduction

In the early 16th century, in Padua, in northeastern Italy, there was a beautiful maiden with silver hair and green eyes, Leonara, who, although born into a family of fallen noblemen, was very proficient in swordsmanship from an early age. One day, the younger brother of the lord of Padua, Paolo, suddenly proposed to Leonora, and she strongly opposed it, but her father had already taken the liberty of agreeing to the marriage contract. On the day of the wedding, a handsome stranger passes through Padua, and his horse rushes into the open-air feast, and Leonora stops the frightened horse. But when the stranger saw Leonora's face, he could not help but cry out, "A flower-crowned noblewoman?" This puzzled Leonora. That night Leonora will solve the mystery, the original, there has been a legend in Italy: as long as who got the "emerald lion" this sword, who is the king of Italy. And the key to the legend in Leonardo da Vinci painted the famous painting "flower crown noble lady" on the girl, and that girl, is Leona pull ......