virtually annihilated. Louis tried to flee the site of the battle but slipped from his frightened horse and drowned. Mary would mourn him for the rest of her life. Hungary was divided into three parts: Ottoman Hungary - a part of the Ottoman Empire, Royal Hungary - ruled by Mary's brother Ferdinand, and Eastern Hungarian Kingdom - ruled by John Zápolya. Ferdinand was elected King of Bohemia. Mary took a vow to never remarry and always wore the heart-shaped medallion worn by her husband in the fatal Battle of Mohács.Earenfight, 50. Regency in Hungary The day after her husband's death, Mary notified Ferdinand of the defeat and asked him to come to Hungary. She requested troops to support her until his arrival. Ferdinand, busy in Bohemia where he had already been elected king, instead named Mary his regent in Hungary. Mary spent the following year working to secure the election of Ferdinand as King of Hungary. On 14 February 1527, she asked for his permission to resign as regent. Permission was denied, and Mary had to remain in the post until the summer of 1527, when Ferdinand finally came to Hungary and assumed the crown, to Mary's relief. Mary soon experienced financial troubles, illnesses, and loneliness. In 1528, her aunt Margaret suggested that she should marry King James V of Scotland. Mary rejected the idea because she had loved her husband and did not wish another marriage. In 1530 Charles again suggested that she should remarry; he proposed to arrange a marriage to Frederick of Bavaria, who had unsuccessfully courted Mary's sister Eleanor sixteen years before. Mary rejected him as well. Ferdinand offered Mary the post of regent again in 1528, but she declined, saying that "such affairs need a person wiser and older". Ferdinand persisted in drawing Mary into his affairs throughout 1529. Archduchess Margaret died on 1 December the next year, leaving the position of Governor of the Seventeen Provinces in the Netherlands vacant. Ferdinand informed her about their aunt's death, saying that her affairs might now "take a different course". Governor of the Netherlands On 3 January 1531, Mary's older brother, Holy Roman Emperor Charles V, requested that she assume the regency of the Netherlands. Charles was ruling a vast empire and was constantly in need of reliable family members who could govern his remote territories in his name. Mary reluctantly accepted on Charles' insistence. On 6