Kösem Sultan was one of the most influential women of the seventeenth-century Ottoman court: a historical figure who rose from favorite consort (haseki) of Ahmed I to mother of Murad IV and Sultan İbrahim, took part in government during the reigns of child sultans, founded charitable endowments and was killed in 1651 in a power struggle within the palace.

Quick Summary
- Also known as Mahpeyker, she was the leading haseki of Ahmed I.
- She gained power as valide sultan when Murad IV came to the throne in 1623.
- Until Murad IV came of age, she held a decisive position in affairs of state.
- She kept her influence in the reigns of Sultan İbrahim and her grandson Mehmed IV.
- Her power struggle with Turhan Sultan ended with her death in 1651.
- The Tiled Mosque in Üsküdar and the Büyük Valide Han are among her major charitable works.
Contents
- Origins, name and arrival at the palace
- Her place in the reign of Ahmed I
- As valide sultan under Murad IV
- Her role in the reign of Sultan İbrahim
- Mehmed IV and the period of the grand valide
- The power struggle with Turhan Sultan
- Her death in 1651 and its aftermath
- Charitable work and architecture
- Why is she important in Ottoman history?
- Frequently asked questions
- Conclusion
Who Was Kösem Sultan? Origins, Name and Arrival at the Palace
Reliable information about the childhood of this woman, known by the name Mahpeyker, is limited. Her birthplace, her family and the circumstances in which she was brought to the palace are not documented with certainty. Some accounts claim that she was the daughter of an Orthodox priest. This detail, however, should not be accepted as an undisputed historical fact.
The historian Mücteba İlgürel notes that about 1589 can be considered her year of birth. This estimate is based on reports about her age at death. There are also different explanations for the origin of the nickname Kösem, used alongside the name Mahpeyker. It is therefore wrong to derive a definite story about her character from the meaning of her name.
Her rise in the palace was closely tied to the dynastic order of the period. The position of hasekis and dynastic mothers was not limited to private life. The rules of harem life in the Ottoman Empire offer a useful framework for understanding this multilayered structure.
Her Place in the Reign of Ahmed I
Kösem Sultan came to prominence at court during the reign of Ahmed I. As one of the ruler’s hasekis, her influence within the dynasty steadily grew. She gave birth to Murad in 1612 and to İbrahim in 1615. The fact that both children would later become rulers markedly increased their mother’s political importance.
When Ahmed I died in 1617, succession was one of the dynasty’s central problems. The throne passed to the ruler’s brother, Mustafa I. Although it has been claimed that Mahpeyker played a decisive role in this choice, firm evidence is limited. It would therefore be misleading to present the change in succession as one person’s plan.
There followed the reign of Osman II and the second reign of Mustafa I. During these years Mahpeyker stayed in the Old Palace. Even so, the future of her sons remained important for the balance of power at court. The workings of Ottoman palace life explain the institutional background of such dynastic relationships.
As Valide Sultan under Murad IV
Murad IV came to the throne as a child on 10 September 1623. His mother then returned to Topkapı Palace with the title of valide sultan. The ruler’s youth gave experienced palace circles wider room in government. Relations with grand viziers, the commanders of the military corps and senior officials grew in importance.
In this period the state was dealing with serious problems. The loss of Baghdad, unrest in the provinces and military revolts strained the government. The valide took part in decision-making by keeping in contact with statesmen on these issues. Nevertheless, it would be inaccurate to say that she ran the government alone.
How Did Kösem Sultan Influence Government?
Her strongest tools were her access to the young ruler and her ties to the palace’s decision-making circles. She could be influential in appointments and in the handling of crises. But the Janissaries, the viziers and the ulema also sought to protect their own interests. Power at court was therefore constantly being redistributed among many actors.
In 1631–1632 Murad IV began to take over the government himself. His mother’s direct room for action thus narrowed. Even so, political contact between them did not break off entirely. This change also shows the temporary character, for Kösem Sultan, of a child sultan’s reign.

Her Role in the Reign of Sultan İbrahim
When Murad IV died in 1640, his surviving brother İbrahim succeeded to the throne. The new ruler’s long confinement within the palace created particular difficulties in government. His mother once again reached a powerful position. That influence, however, did not mean that her relations with the ruler were always smooth.
Kösem Sultan closely followed the question of a male heir for the continuity of the dynasty. At the same time, İbrahim’s circle of favorites and palace spending gave rise to new disputes. Sources report that the ruler at times sent his mother away from the palace. These eight years, therefore, were not a period of continuous and unlimited influence.
In 1648 leading statesmen raised the question of deposing the sultan. His mother resisted at first but eventually took part in the process. Her young grandson Mehmed IV was placed on the throne in his stead. İbrahim’s killing shortly afterward was one of the gravest political crises in the history of the dynasty.
Mehmed IV and the Period of the Grand Valide
Mehmed IV became ruler as a child on 8 August 1648. His mother, Hatice Turhan Sultan, officially held the position of valide sultan. Even so, the ruler’s grandmother continued to live in the palace. Sources refer to her with titles such as büyük valide or valide-i kebire (grand valide).
Ali Akyıldız’s study of the office of valide sultan explains the exceptional nature of this position. The presence of two powerful dynastic women in the same palace sharpened the rivalry over authority. The difference in age and experience fed the grandmother’s claim to precedence. Turhan Sultan, however, also had the legitimacy that came from her son’s reign.
The grand valide strengthened her ties, especially with the leading figures of the Janissary corps. Another group within the palace, meanwhile, supported the young ruler’s mother. Disputes over state appointments were shaped by the rivalry between these two centers. Military and financial crises made the tension even greater.
The Power Struggle with Turhan Sultan
The rivalry was not merely a personal quarrel between two people. Janissary commanders, palace officials and grand viziers took different sides. Every appointment raised again the question of who would hold influence over government. The political tension therefore also affected the balance among institutions.
The chronicles of the period report that the grand valide planned to depose Mehmed IV and put another of her grandsons on the throne. It is also said that a move against Turhan Sultan was planned. It should not be forgotten, however, that these accounts were produced amid palace struggles. The perspective of the sources must be taken into account when weighing the details.
The conflict between Kösem Sultan and Turhan Sultan could not, in the end, be resolved by compromise. Harem officials who supported the young ruler’s mother took action. The political rivalry that had been building for some time thus turned into open violence inside the palace.
Her Death in 1651 and Its Aftermath
Mahpeyker was killed in Topkapı Palace on the night of 2–3 September 1651. According to Mücteba İlgürel, the operation was carried out by men appointed by Turhan Sultan. Her body was later taken to the Old Palace. She was buried in the tomb of Ahmed I in Sultanahmet.
After her death, steps against the political position of the corps commanders accelerated. Palace and military groups that had competed for years formed new balances. But this event did not end all the structural problems overnight. The state’s financial and military difficulties continued in the years that followed.
Where Is Kösem Sultan’s Grave?
Her grave is in the Tomb of Sultan Ahmed I in Istanbul. The building stands in the historic complex near the Sultan Ahmed Mosque. The tomb is one of the important places that recall the family relationships of the Ottoman dynasty in the seventeenth century.
Charitable Work and Architecture
Mahpeyker’s influence was not limited to struggles over government. She also used her large income for endowments and social assistance. Some sources record that she helped people imprisoned for debt. Providing trousseaus for women in palace service is also mentioned among her charitable activities.
The Tiled Mosque (Çinili Cami) in Üsküdar is one of the most important buildings associated with her name. The complex, completed in 1640, also included educational and water buildings. Fountains, bathhouses and charitable works in various neighborhoods supported a wide network of assistance. These works make visible the impact of dynastic women on urban life.
The Büyük Valide Han in Istanbul is also among the commercial buildings she commissioned. Such income-producing buildings could help cover the expenses of endowments. Aid for water supply along the pilgrimage route and for the poor of the holy cities is also recorded. The Ottoman endowment system and social assistance explain how these activities were sustained.

Why Is She Important in Ottoman History?
Kösem Sultan lived in an age when the political influence of dynastic women became very pronounced. The reigns of her two sons and her grandson’s accession as a child gave her a long period of activity. Her power nonetheless depended on the support of alliances at court. When those alliances shifted, her position quickly became fragile.
Popular accounts often call this period the Sultanate of Women. That expression, however, does not mean that women ran all the institutions of the state on their own. Leslie Peirce’s work on the harem and the dynasty emphasizes the link between political influence and relationships of family, representation and legitimacy. The power dynamics of the harem allow the subject to be assessed in a wider framework.
Two different dimensions coexist in her legacy. On one side are experience of government in times of crisis and the continuity of the dynasty. On the other stand alliances with military groups and harsh palace struggles. Historical assessment should not rest on praise or condemnation alone.
Frequently Asked Questions
What Was Kösem Sultan’s Real Name?
Historical sources refer to her as Mahpeyker. Kösem is her most commonly used nickname. There is no definitive, universally accepted record of the name she bore at birth.
How Long Was Kösem Sultan Politically Influential?
The roughly twenty-eight years between 1623 and 1651 stand out in particular. The degree of her influence, however, was not the same under every ruler. When Murad IV took over the government, her powers had narrowed.
Why Did She Clash with Turhan Sultan?
At the heart of the conflict was the question of who would exercise political authority on behalf of the child sultan. The orientation of the military corps and palace circles toward different alliances sharpened the dispute. This political rivalry turned into a deadly showdown in 1651.
Conclusion
Kösem Sultan is an important figure who shows how the harem, the dynasty and the government of the state were bound together in Ottoman history. Her long political influence, her charitable works and her death in 1651 should be assessed together. Her life can then be understood not only through palace intrigues but also through the institutions and crises of her time.
Sources
- Mücteba İlgürel, TDV Encyclopedia of Islam, entry “Kösem Sultan” (2002).
- Ali Akyıldız, TDV Encyclopedia of Islam, entry “Vâlide Sultan” (2012).
- Leslie P. Peirce, The Imperial Harem: Women and Sovereignty in the Ottoman Empire.
- İsmail Hakkı Uzunçarşılı, Osmanlı Devleti’nin Saray Teşkilâtı.