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).
Bhoja
Apart from epigraphic records, much of the information about Bhoja comes from these legendary accounts, including Merutunga's "Prabandha-Chintamani" (14th century), Rajavallabha's "Bhoja-Charitra" (15th century), and Ballala's "Bhoja-Prabandha" (17th century). However, many of the popular legends about Bhoja do not have any historical basis. For example, the "Bhoja-Prabandha" anachronistically describes the ancient poet Kalidasa as a contemporary of Bhoja.