Mirza Safiy retitled Saif Khan, was the husband of Malka Banu, eldest sister of Mumtaz Mahal, the lady of the Taj. When Saif Khan became the Governor of Bihar in 1628 A.D. he undertook construction of public utilities. Peter Mundy speaks very highly of them. The inception of safiabad township near Jamalpur and Safina Sarai and a big well in Munger are commonly attributed to saif Khan.