In my own state we have so many languages spoken in different parts - Kannada being the state language is spoken differently in different regions and the difference is so much so that it is difficult to follow it even for those who know kannada. There is Thulu,Konkani,Kodava languages all spoken by qquite a large number of people and none of them have scripts so Kannada is used for writing ..There is also Thoda language which sounds a little like Afrikanese - apparently some people of negroid origin settled here centuries ago and adopted to the local customs.their language too has undergone transformation and now spoken with a mix of Thulu and Africanese,,

Have you ever cared to listen to Banjara people who are always on the move. They are Romas basically who dress like Rajsthani but speak combination of Marwari and several languages from Europe and South America. They live on manufacturing hand tools in their tents on the road and sell them going to nearby colonies. Their features look similar to Europeans and some of them look like South Americans. They have no homes but live in their carts and on the move all the time. They stay for few months in a place and then move on. They are also called Gariya luhar.

They sound similar to a community called Shikalgars in Maharashtra who have now settled down in various places, but there characteristics are quite similar to the ones you have described. They may probably be an offshoot of the original tribe that migrated southwards! But their chief occupation still is making various types of hand tools!