James Randall Marsh
James Randall Marsh( 1896- 1965) was an American artist and the husband of Anne Steele Marsh.
Alan Pownall
Stephen Alan Fletcher Pownall( born 30 December 1986) is an English singer- songwriter and the husband of actress Gabriella Wilde.
Andrew Upton
Andrew Upton( born 1 February 1966) is an Australian playwright, screenwriter, and director.
He is the husband of actress Cate Blanchett.
Lapidoth
Lapidoth(" Lappidothtorches") was the husband of Deborah the fourth Judge of Israel.
Lapidoth is also a Hebrew male given name.
Gevherriz Kalfa
Gevherriz Kalfa (1863 – 1940) was a lady-in-waiting to Sultan Murad V of the Ottoman Empire.
Devisingh Ransingh Shekhawat
Devisingh Ransingh Shekhawat is the former and first First Gentleman of India as the husband of Pratibha Patil.
Murad V
Murad V 
(21 September 1840 – 29 August 1904) was the 33rd Sultan of the Ottoman Empire who reigned from 30 May to 31 August 1876.
He was born in Istanbul.
His father was Abdulmejid I.
His mother, whom his father married in Constantinople on 1 August 1839, was Şevkefza Valide Sultan, an ethnic Circassian from the Ubykh tribe, daughter of Mehmed Bey Zaurum and his wife Cemile Hanım.
Stan Marks
Stan Marks is an Australian writer and journalist.
He is the husband of Holocaust survivor Eva Marks.
Stan Rice
Stan Rice( November 7, 1942 – December 9, 2002) was an American poet and artist.
He was the husband of author Anne Rice.
Jon Leach
Jonathan Leach( born April 18, 1973) is a former professional tennis player from the United States.
He is the husband of Lindsay Davenport.

Question: What is the place of birth of Gevherriz Kalfa's husband?
Answer: Istanbul