Ghulamhusayn Banan's mother was the daughter of Muhammad Taqi Mirza Rukni (Rukn al-Dawlah), Nasir al-Din Shah's brother. His father was Karim Khan Banan al-Dawlah, son of Muhammad Taqi Mirza Fazl Allah Khan Mustawfi Nuri. Banan's first marriage was with Maryam Vaziri and they had a daughter named Giti Banan. He then married Paridukht Avar.
Information provided by the family and: http://www.iranicaonline.org/articles/banan-golam-hosayn