Nawab Najib-ud-Daula, also known as Najib Khan was a noted Rohilla Muslim warrior and serviceman of both the mughal empire and the Durrani empire, Nawab Najib-ud- Daula was a noted Rohilla tribal chief in 18th century Rohilkhand, who in the 1740s founded the city of Najibabad in Bijnor district, India where he established the present day city of Najibabad, a state of Najibabad independent from Rohilla tribes, and received the title, "Nawab Najib-ud-daulla". From 1757 to 1770 he was governor of saharanpur, ruling over Dehradun.Many architectural relics of the period of Rohilla he oversaw remain in Najibabad, which he founded at the height of his career as a Mughal minister.
He succeed Safdarjung as grand wazir of the Mughal Empire and was a devoted serviceman of the Mughal Emperor Alamgir II later in his carrier he was known as Nawab Najib-ud- Doula.
Najibabad has five sites, protected by the Archaeological Survey of India : Cemetery of Nawab Najib-ud-Daula
- Jama Masjid
- Rohilla Palace (called is Thanna)
- Pathargarh Fort built by Najib-ud-Daula
- Portion of the old Palace
- Tomb of Nawab Najib-ud-Daula
- Mordhaj also known as Munawar Jar with lofty mound Called chaar minar
In 1901, Najibabad had a population of 19,568. Even today, several architectural remains of Rohilla magnificence can be found within the city .