Daud Khan avenged his cousin's death and succeeded him as Dewan of the Subah under Jahangir, consolidating his position as jagirdar of the pargana.

In the early 1600s, he built a mosque, Eidgah, and an orchard with thousands of trees, naming the nearby mouza Daudpur.

The estate flourished under successive generations, notably Raja Yad Ali Khan a sixth-generation descendant, who solidified its prominence.

Under British rule, some parts of the Kamsar region fell under the jurisdiction of Amil Deokinandan (Kusi &Usia) and 37 villages taluka to Gaighat, under, Vizianagaram Estate.

The Daudpur estate, became small consisting 18 mouzas nearby Dewaitha, but remained under the cheiftiancy control of the family with co-operation, till zamindari abolishment in 1956.

[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Devaitha, a prominent village in Zamania Tehsil, Ghazipur district, Uttar Pradesh, has a population of 7,104 across 917 families (2011 Census).

Of those engaged in primary employment, 130 are cultivators (either owners or co-owners of land), and 30 work as agricultural laborers.

The village's climate is typical of the Gangetic plains, featuring hot summers, monsoon rains, and cool winters.

The fertile soil supports the cultivation of crops such as wheat, rice, and sugarcane, with this the village is located in mango belt, the fruits which are native like Blackberry, lychee, Guava, Coconuts, and Mangoes including famous native varieties like Chaunsa and langra, making agriculture a livelihood.