Pirali Brahmin

The Bengali Brahmins are those Hindu Brahmins who traditionally reside in the Bengal region of the Indian subcontinent, currently comprising the Indian state of West Bengal, Tripura, Assam and Bangladesh. When the British left India in 1947, carving out separate nations, a number of families moved from the Muslim-majority East Bengal (now Bangladesh) to be within the borders of the newly defined Republic of India, and continued to migrate for several decades thereafter.

Bengali Brahmins are categorized as Pancha-Gauda Brahmins (the Brahmins who traditionally lived to the north of the Vindhyas).

The earliest historically verifiable presence of Brahmins in Bengal can be ascertained from Dhanaidaha copper-plate inscription of Kumargupta 1 of the Gupta Year 113 (433 C.E.) which records the grant of land to a Brahmin named Varahasvamin of the Samavedi school. A copper-plate grant from the Gupta period found in the vicinity of Somapura mentions a Brahmin donating land to a Jain vihara at Vatagohali. Literary sources like Ramayana, Mahabharata, Jain and Buddhist works, however record the presence of Brahmins in various parts of Bengal during earlier periods. Historical evidence also attests significant presence of Brahmins in Bengal during the Maurya period. The Jain Acharya Bhadrabahu, regarded to be the preceptor of Chandragupta Maurya is said to have been born in Brahmin family of Pundravardhana (or Puṇḍra, the region north of the Ganges and west of Brahmaputra in Bengal, later known as Vārendra). Such evidences suggest Puṇḍra or Vārendra and regions west of Bhagirathi (called Radha in ancient age) to be seats of Brahmins from ancient times; Rādhi and Varendra are still chief branches of Bengali Brahmins settled in these regions. Medium to large scale migrations of Brahmins from various parts of India like Mithila, Kanyakubja region, Kolancha, southern India and Pushkar in Rajasthan, among other places, occurred from time to time, especially during Pala and Sena periods.

...
Wikipedia