Analysis of information sources in references of the Wikipedia article "மத்வ பிராமணர்கள்" in Tamil language version.
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(help)The Daivadnya accepted Vaishnavism during the twelfth century under the spiritual influence of Madawacharya, a great Vaishnava saint, but as they were looked down upon by other communities, they began to migrate to Maharashtra and, later, to Goa... ... They have two sects, i.e. Smartha and Vaishnava. Those living in Karnataka and Goa are mostly Vaishnava.
daivadnya brahman sub-caste originally from coastal Maharashtra, Karnataka and Goa
While the GSBs tend to be a religiously self-contained community, the Taulavas and Desasthas are more sought after for priestly services by other communities. There are numerous cultural difference between these three subdivisions.