Kösem Sultan occupation regent
Valide sultan
Reign of Murad IV
Kösem entered the Topkapı Palace with a grandiose ceremonial procession in front of which a thousand dervishes were marching with prayers to celebrate her forthcoming. She was once again thrust into the political arena when her son ascended to the throne on 10 September 1623 as Murad IV. Since he was a minor, she was appointed not only as valide sultan but also as official regent (naib-i-sultanat).In 1623, the Ottoman court sent a letter to the Republic of Venice, formally announcing Murad IV's succession to the throne and referring to Kösem as valide sultan: "Her Majesty the Sultana Valide [...] for the late Sultan Ahmed, whom Allah took with him, was a very important person and he loved her so much that he honoured her by marrying her." The letter further indicates that Kösem would rule in her son's name: "We have great hope and faith in the valide sultan, who - among all women enjoying the position - is distinguished by maturity and virtue of character."Shortly after Murad's enthronement, a Venetian ambassadorial message remarked on Kösem's political experience:
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