Analysis of information sources in references of the Wikipedia article "Marwari language" in English language version.
Marwari : also called Rajasthani, Merwari, Marvari. 12,963,000 speakers in India and Nepal. In India: Gujarat, Rajasthan, Madhya Pradesh, Punjab, Delhi, Haryana, Uttar Pradesh, throughout India. Dialects are Standard Marwari, Jaipuri, Shekawati, Dhundhari, Bikaneri.
The lok gathā (literally, folk narrative) was a highly developed tradition in the Indian subcontinent, especially after the twelfth century, and was simultaneous with the growth of apabhransa, the literary languages of India that derived from Sanskrit and the Prakrits. This developed into the desa bhāṣā, or popular languages, such as Old Western Rajasthani (OWR) or Marubhasa, Bengali, Gujarati, and so on. The traditional language of Rajasthani bards is Dingal (from ding, or arrogance), a literary and archaic form of old Marwari. It was replaced by the more popular Rajasthani (which Grierson calls old Gujarati) that detached itself from western apabhransa about the thirteenth century. This language was the first of all the bhasas of northern India to possess a literature. The Dingal of the Rajasthani bards is the literary form of that language and the ancestor of the contemporary Marvari and Gujarati.