Davud Agha
Davud Agha was the chief imperial architect of the Ottoman Empire from 1588, after the death of his predecessor Sinan, until his death in 1598 or 1599. His works include various monuments from the classical period of Ottoman architecture.
Career
Davud Agha was probably recruited through the devshirme system circa 1562 and from there followed a typical path into the Ottoman bureaucracy, studying architecture under the master architect Sinan. He probably participated as a military engineer in the Ottoman campaign against the Safavids in 1583. He was a protegé of the Chief Black Eunuch, Mehmed Agha or Mehmet bin Abdurrahman. Under the latter's supervision, he may have been responsible for a late expansion of the Atik Valide Mosque in Üsküdar between 1584 and 1586. The earliest work clearly attributed to him was in the Topkapı Palace in 1585, where he constructed the sultan's bath and most likely the adjacent Imperial Hall. Other early works attributed to him, while Sinan was still the chief architect, are the mosque of Kızlarağa Mehmet at Çarşamba and the Mehmed Agha Mosque and Mehmed Agha Hamam in Istanbul. At the time of Sinan's death, he was a senior official in the imperial department of architects and served as the Master of the Waterways, the second-highest position in the department.One of the buildings sometimes attributed to him is the Nışançı [Mehmed Pasha Mosque] in Istanbul, but it may be a late work of Sinan or even possibly a work of Sedefkar Mehmed Agha. He probably designed the market and primary school that were added to the Selimiye Mosque complex built by Sinan in Edirne. The Cerrahpasha Mosque in Istanbul, completed around 1593, is likely attributable to him. Other monuments more securely attributed to him include the Tomb of Koca Sinan Pasha on Divanyolu, the Basketmakers' Kiosk and Pearl Kiosk on the Bosphorus shore, and the complex of Gazanfer Agha near the Valens Aqueduct.
He was likely commissioned to build the mausoleum of Sultan Murad III, located in the precinct of Hagia Sophia, when that sultan died in 1595. He most likely designed the tomb but it was completed after his death by Dalgıç Ahmed Agha in 1599 or 1600. Davud Agha was also responsible for beginning construction on the Yeni Valide Mosque in the Eminönü neighbourhood of Istanbul in 1597, on the orders of Safiye Sultan. The project was ultimately abandoned after his death and only completed later in 17th century by a different architect and patron.