Kalwars are members of the subcaste of "distillers of alcohol" within the Indian caste system. In modern times, they may follow any occupation. Kalwars are Haihayavamshi.They are classified as OF Somavamshiya Sahasrarjun Kshatriyas. Haihaya is branch of Somavamshiya Kshatriyas.They claim lineage from one of the greatest Kings of all times Rajeshwara Sahasrarjuna also known as Kartavirya Arjuna, one of the great Chakarvarti Samrats of India. Common Surnames
They number an estimated 3,500,000 worldwide and mostly live in: Western and Northern India, Nepal, Central and Western Pakistan, Eastern Afghanistan, Germany. There are similar communities in different parts of India involved in same profession and back ground.Ezhavas or Thiyyas of kerala,Billavas and Thiyya billavas of South Kannada region,Edigas of Karnataka,Bhandari of Maharastra,Nadars of Tamilnadu,Gouds of Andhra,Durave and Nalaver of Srilanka are from the same stock.
there are various surnames of kshyatriya martha Pardesi kalar as, Chaurewar, Diyewar, Jamaiwar, Adewar, kawle, Chauragade, Bisane, Duve, Duvadhapar, etc.