Kālidāsa
The most popular theory is that Kalidasa flourished during the reign of Chandragupta II, and therefore lived around 4th-5th century CE. Several Western scholars have supported this theory, since the days of William Jones and A. B. Keith. Many Indian scholars, such as Vasudev Vishnu Mirashi and Ram Gupta, also place Kalidasa in this period. According to this theory, his career might have extended to the reign of Kumaragupta I (r. 414 – 455 CE), and possibly, to that of Skandagupta (r. 455 – 467 CE).
Ravidassia religion
Ravidas was born on 15 January 1377 CE (Indian calendar Sunday Sukhal Falgin Parvithta 1433) to the untouchable chamar community
. His birthplace was a locality known as Mandhuadhe in the city of Varanasi, Uttar Pradesh state, India. The birthplace is now marked by the Shri Guru Ravidass Janam Asthan (Begampura), and is a major place of pilgrimage for the followers of Guru Ravidas today. Ravidassia believe that Ravidas died in Benares at the age of 126.