Recently I came across a Brahmin Marriage where boy's father and girl's father are brothers. I am sure it is not acceptable according to our traditions. When same gothram itself is not acceptable, how this can be permitted. How the Vadhyar can perform the function?
எண்ணாயிரம் ஆண்டு யோகம் இருப்பினும் கண்ணார் அமுதனை கண்டறிவாரில்லை உள் நாடி ஒளி பெற உள்ளே நோக்கினார் கண்ணாடி போல கலந்து நின்றானே
According to Mahaperiyava,the marriage customs in south like cousins marrying each other is itself against Shastras as the dictum of Shastras is not to have common ancestors in the preceding three generations of both the groom and the girl.Hence this would also be taboo