1) Blacksmith caste 
Karmakar (কর্মকার) is a Bengali Hindu caste spread throughout West Bengal and Bangladesh. The Karmakars are traditionally blacksmiths or goldsmiths by trade. While some of them use Karmakar as their family name, others use Rana, Das, Roy, Mullick etc. == Origin == According to mythology the forefather of Karmakars was the son of Vish...