One of these panels is signed by Darwish 'Ali the Elder (d. 1673 AD). Born in Istanbul, Darwish 'Ali practised calligraphy with Halid Erzurumi (d. 1631 AD). He became a well known master of calligraphy and many members of the Ottoman elite sent their children to him to improve their skills in calligraphy. Rado notes that the leading 17th century Grand Vizier Koprulu Fazil Ahmed Pasha was amongst his students. He passed away in Istanbul in 1673 (Rado, Turk Hattatlari (Turkish Calligraphers), Istanbul, 1980, p. 100).