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, the posadnik of Novgorod from 1438 to 1439 and again from 1453. According to legend and historical tradition, she led the republic's struggle against Moscow between her husband's death and the city's final annexation by Grand Prince Ivan III in 1478.