in 900ad maharaja dharamdev solanki ruler of tonk toda went 4 tapasya in vani<vun>.his son in law karamchand look after the administration ,after the samadhi of dharamdev ,karamchand built a temple in his name,dada dev,coz of sum reasun raja karamchand migrated frm tonk toda 2 delhi in 900ad,thn maharaj married a jaat girl named channo jatni of kair village <near najafgarh>of sehrawat clan,in return he promised the father of that jaat girl that he will give all his cultivated land of palam riyasat 2 the son of him and channo