Bir king
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{{Use Indian English|date=September 2024}}
The Bir King was a famous king of Birbhum before Muslim rule. Asaduzzaman Khan was an army chief who killed the Bir King and conquered Rajnagar where he established a Muslim sultanate.{{Cite web|last=সেনগুপ্ত|first=দয়াল|title=প্রাচীন রাজধানী ঘিরে গড়ে উঠুক পর্যটন কেন্দ্র|url=https://www.anandabazar.com/west-bengal/purulia-birbhum-bankura/history-and-ancient-civilisation-of-rajnagar-as-a-promising-tourist-spot-1.147361|access-date=2021-01-30|website=www.anandabazar.com|language=bn}}
According to local history, in 1350 AD there were some quarrels between Laxmanawati and Subarnagram, and the ancestors of Bir King had set up a capital at Lakknur (Rajnagar). the Bir Kings were two brothers, Bir Singh and Mallar Singh. Mallarpur has named after Mallar Singh.{{Cite web|date=2019-06-21|title=বীরভূম নাম হল কিভাবে|url=https://sobbanglay.com/sob/how-was-birbhum-named/|access-date=2021-01-31|website=সববাংলায়|language=bn-BD}}
In 1206 AD an army officer of Muhammad bin Bakhtiyar Khalji, Muhammad Shiran Khalji defeated the Bir King and conquered Rajnagar. The queen committed suicide at a nearby pond.{{Cite journal|last=Marshall|first=P. J.|date=February 1987|title=Ranjan Kumar Gupta: The economic life of a Bengal district: Birbhum: 1770–. xvi, 352 pp. Burdwan: University of Burdwan, 1984.|journal=Bulletin of the School of Oriental and African Studies|volume=50|issue=1|pages=157–158|doi=10.1017/s0041977x00053593|issn=0041-977X}}