Marfa Boretskaya
Marfa Boretskaya (Russian: Марфа Борецкая), also known as Martha the Mayoress (Russian: Марфа Посадница, romanized: Marfa Posadnitsa), was a Russian businesswoman and noblewoman. She was the wife of Isaak Boretsky, a posadnik of Novgorod in the 15th century.
In the final decades of Novgorod's independence, she played a leading role in the city's politics. According to historical tradition, she led the struggle against Moscow until the city's final annexation by Grand Prince Ivan III in 1478. The incorporation of Novgorod marked the final step in Moscow’s process of establishing dominance over the Russian lands.