Rayna Popgeorgieva Futekova (Райна Попгеоргиева Футекова), better known as Rayna Knyaginya (Райна Княгиня) (1856-1917) was a Bulgarian teacher and revolutionary born in Panagyurishte who is famous for having sewn the flag of the April Uprising of 1876.
On 22 April, the day of the flag's sanctification by priests from neighbouring villages, Rayna sewed tassels prepared during the night to it. The flag's size is 2 by 1.5 m, it has two sides and is hemmed by a strip of gold lace.
On the day the uprising was proclaimed, she waved the flag together with Georgi Benkovski. After it was brutally crushed by Ottoman troops, she was captured, beaten and allowed only to eat bread and water for more than a month in the Plovdiv prison.
For the commemoration of the uprising's 25th anniversary, Rayna Knyaginya prepared three copies of the original flag, two of them surviving until today and the other one being destroyed during the bombings of Sofia in World War II.
Rayna Knyaginya was then invited by Kliment Turnovski to become a teacher in Tarnovo. She returned to Panagyurishte three years later to marry Vasil Dipchev, the mayor of the town. They moved to Plovdiv, where Dipchev, an extreme russophile, was unable to find a job during the russophobic government of Stefan Stambolov.
The two had five sons — Ivan, Georgi, Vladimir, Petar and Asen. Rayna also adopted a girl by the name of Gina. Vasil Dipchev was elected a deputy to the National Assembly of Bulgaria in 1888 and the family moved to Sofia. Dipchev died in 1898 as a consequence of the Black Mosque beatings that followed the assault on Stambolov, leaving Rayna with six children, the oldest of which was only 13 years old. She worked in the Sofia quarters of Orlandovtsi and Malashevtsi, maintaining strong ties with the family of Hristo Botev until her death on 29 July 1917, then 61 years old.