Maria Eleonora was a Swedish princess born in 1599, known for her marriage to Gustavus Adolphus, the King of Sweden. She played a significant role in the royal court and was involved in various political matters during her husband's reign. After Gustavus Adolphus died in 1632 during the Thirty Years' War, Maria Eleonora faced challenges as a widow. She became a prominent figure in Sweden, advocating for her daughter's rights and maintaining her family's legacy. Her life reflects the complexities of royal duties and personal struggles in a turbulent historical period.