Mahārāja Kam Dév Singh Urf Rao Dalpat Karam Singh Sikarwar (1438–1532) was a Sikarwar Rajput or a Bhumihar Brahmin (as it is disputed among historians) king^[1] and the ruler of the Pahargarh Estate, which mainly comprised what are now the cities of Morena, Gwalior, Jhansi, Shivpuri. Kam Dev was the son of Maharaja Jay Raj Dev Singh Misr who was the ruler of the Vijaypur Sikri estate (Fatehpur Sikri).^[1][2][3][4]

Kam Dev was born in 1438 CE at Vijaypur Sikri. in a Brahmin or Rajput family. His father, Maharaja Jay Raj Dev Singh Misr, was the ruler of the Vijaypur Sikri estate. Kam Dev had two younger brothers: Dharam Singh Dev (also known as Rao Dham Dev) and Vir Dev Singh (also known as Vikram Pratap Dev Singh). His father allocated parts of the Pahadgarh estate to him. Kam Dev's coronation took place in 1462 AD. He also served as the army chief of his father’s military.

After the death of his father, Raja Jai Raj Dev Singh (1420–1504), in 1504 AD, his brother Raja Dham Dev Rao Singh (1453–1540) was crowned as the king of Vijaypur Sikri. Dham Dev later shifted his capital from Vijaypur Sikri to Fatehabad, near Fatehpur Sikri, now in Agra. Vijaypur Sikri was a large kingdom consisting of three cities: Fatehpur Sikri (parts of Agra), Karauli, and Dholpur. While Dham Dev ruled Vijaypur Sikri, Kam Dev governed the Pahadgarh estate. The youngest brother, Vikram Pratap Dev Singh, was responsible for handling the affairs of both brothers' territories. After their father’s death, Kam Dev became the army chief of Dham Dev's army.

Following the Battle of Khanwa, Kam Dev lost his kingdom but retained control over Kanpur, Kannauj, and Fatehpur. Kam Dev and his brother Dham Dev established their new capital at Madarpur. However, after their defeat in the Battle of Madarpur and the Battle of Ghaghra, they moved to Ghazipur. In Ghazipur, they established their control on Birpur, which was previously ruled by the Dikhit Rajputs. After a battle in 1530, Kam Dev overthrew the ruler of Birpur and became the ruler of the Birpur estate.

Kam Dev had two younger brothers, Rao Dham Dev Singh Misr and Vikram Partap Dev Singh (also known as Biram Dev Singh). Kam Dev’s father had assigned him parts of the Pahadgarh estate, and his coronation occurred in 1462 AD. He also served as the Army Chief under his father's rule. After the death of his father in 1504 AD, his brother Maharaja Dham Dev Singh (born 1460) became the king of Vijaypur Sikri. Dham Dev later moved his capital from Vijaypur Sikri to Fatehabad, near Fatehpur Sikri, now in the Agra district. Vijaypur Sikri consisted of three cities: Fatehpur Sikri (part of Agra), Karauli, and Dholpur. Dham Dev became the ruler of Vijaypur Sikri, while Kam Dev ruled Pahadgarh. The youngest brother, Vikram Partap Dev Singh, managed the affairs of both brothers' territories. After Kam Dev’s father passed away, Kam Dev took on the role of Army Chief for Dham Dev.^[5]

The Battle of Khanwa occurred on 17 March 1527 AD, where Dham Dev and Kam Dev joined the Confederation led by Rana Sanga, providing 4000 troops and administrative support to the alliance. A total of 1.8 lakh Rajput soldiers were stationed in the Bahadur Garh fort, with sufficient rations stored for a potential siege of Agra.

Initially, Rana Sanga was confident of victory due to the support of Ibrahim Lodi and the full Confederation. However, the Mughals, under Babur, captured Agra swiftly, leading to the Rajput defeat. The main reason for this sudden turn of events was the defection of Salyadity, a powerful Tomar Rajput ruler, who joined Babur with 30,000 troops, giving him a decisive advantage.

Rana Sanga was defeated and forced to surrender on the battlefield. Following this, the command of the Rajput retreat was entrusted to Dham Dev, who managed it with discipline and control. The Bahadurgarh fort was set ablaze by the Mughal army, and Babur renamed Vijaypur Sikri as Fatehpur Sikri, which means "City of Victory" in both Persian and Hindi.

The defeat at the Battle of Khanwa marked a significant setback for the Rajputs. Babur, in his memoir Baburnama, mentions both Rao Dham Dev and Kam Dev, alongside other prominent figures like Rana Sanga, Mahmud Lodi, Medini Rai, and Ibrahim Lodi.

After the defeat in the Battle of Khanwa, many rulers fled their primary towns and cities. Kam Dev’s family was divided, with part of his family staying in Pahadgarh, while the other part relocated. Kam Dev had four sons. His eldest son’s family moved to Kanpur district with him, while his second son, Vichal Misr, had part of his family remain in Pahadgarh, while the other part moved to Kanpur. The remaining two sons' families also joined Kam Dev in Kanpur by 1527 AD. Dham Dev and his brother Vikram Partap Dev also relocated their families to Kanpur district.^[6]

After the three brothers settled in Kanpur with a large amount of gold coins and the statue of their clan deity, Mata Khamakhya, they became wealthy zamindars of the region. As they established their rule in Kanpur, Babur planned to attack their fort in Madarpur. This led to the Battle of Madarpur against Babur's general, Mir Baqi. Unfortunately, Kam Dev and his brothers, with their relatively small army, were defeated in 1528 AD.

On 26 October 1530 AD, Kam Dev and Dham Dev migrated to Ghazipur, where they settled in a place now known as Reotipur and named it Dalpatpur. Kam Dev’s first son’s family established 50 villages in Ghazipur district, while his second son’s family moved to Assam and established 29 villages in Morena district, Madhya Pradesh. His third son’s family set up 11 villages in Morena district and 56 villages in Kochas tehsil. His fourth son’s family founded 22 villages in Morena district, 60 villages in Kaimur district, and 60 villages near Chausa. Dham Dev’s family established 84 villages near Gahmar, Bhabua, Kudra, and Chainpur, their reign established stronghold there and they became powerful Zamindar of the region although many of his descendant became muslim like in Suhawal, Ramawal , Kudra (Kaimur) and Reotipur but the prominent branch of his family was Kamsar Pathans from, his great grandson Narhar Dev who adopted Islam in 1542, due to the influence of a sufi saint, and became Narhar Khan and also got the title of Khan Bahadur or Khan-e-Alam who was settled at Ghazipur, Zamania tehsil, being the eldest in his family he was the chief of the estate, and a Raja of the region. He also established the Dildarnagar Kamsar region there, His descendants are known as Kamsari Pathan.^{[1][2][3][4][7]}