Rayna Popgeorgieva was a teacher involved in preparations for the April Uprising. Knyaginya, meaning princess, was a nickname rather than a hereditary ruling title. Her role reveals work behind a political symbol: people planned, sewed and carried the flag before it entered public memory. Worked as a teacher in Panagyurishte. Sewed a flag for the uprising in 1876. Became known as Rayna Knyaginya. Her story connects women’s participation to a documented action and a surviving symbol.