Humayun Ahmed’s 1st wife is Gultekin Khan.
Humayun Ahmed married Gultekin Khan in 1976. Together they had three daughters, Nova, Shila and Bipasha, and one son, Nuhash Humayun. Shila Ahmed went on to become a television and film actress and Nuhash became a writer, film director and producer. He was one of the directors of Iti, Tomari Dhaka. Bipasha also acted in a supporting role in Nokkhotrer Raat and starred in Mayaboti. In 2003, Ahmed divorced Gultekin. He then married actress Meher Afroz Shaon in 2004. He had two sons from the second marriage, Nishad and Ninit.Source: Wikipedia