I always wondered how the families of Rupa and Sanatana Gosvamis, who were Gauda Sarasvata Brahmanas from Karnataka ended up in Bengal. This article explains this mystery.
“Sena Dynasty ruled Bengal for little over a century (c 1097-1225).The emergence of the dynasty, who supplanted the Palas in Bengal towards the close of the 11th century AD, is a very important chapter in the history of ancient Bengal. Taking advantage of the revolt of the Samantachakra in the varendra during the reign of Mahipala II, vijayasena, the founder of the Sena dynasty, gradually consolidated his position in Western Bengal and ultimately assumed an independent position during the reign of Madanapala. One important aspect of Sena rule in Bengal is that the whole of Bengal was
brought under a single rule for the first time in its history…” FULL ARTICLE[...]