What was the title of the chief black eunuch in the Ottoman imperial harem?

What was the title of the chief black eunuch in the Ottoman imperial harem? The title was Kizlar Agha.

The Kizlar Agha, also written Kızlar Ağası, was formally the Agha of the House of Felicity and served as the head of the eunuchs guarding the Ottoman imperial harem. The title literally means “Agha of the Girls,” reflecting his association with the women’s quarters of the palace.

The office became especially important during the reign of Sultan Murad III, when it was established in 1574. The Kizlar Agha supervised the harem’s administration, controlled communication between the secluded household and the outside court, and often acted as an intermediary between the sultan and senior officials.

Kizlar Agha is commonly confused with Kapı Agha, the chief white eunuch. Kapı Agha traditionally supervised the male pages and controlled access to the Inner Palace, while the Kizlar Agha headed the black eunuchs associated with the imperial harem. At the height of his influence, the Kizlar Agha was among the most powerful officials at the Ottoman court.