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).
Ujjain
Ujjain remained as an important city of the Guptas during the 4th and the 5th centuries. Kalidasa, the great Indian classical poet of the 5th century who lived in the times of the Gupta king Vikramaditya wrote his epic work "Meghadūta" in which he describes the richness of Ujjain and its people. In the 6th century CE the Chinese pilgrim Xuanzang visited India. He describes the ruler of Avanti as a king who was generous to the poor and presented them with gifts.
Bharthari is said to have written his great epics, Virat Katha, Neeti Sataka, the love story of Pradyot Princess Vasavadatta and Udayan in Ujjayini, as the city was called during his times. The writings of Bhasa are set in Ujjain, and he probably lived in the city. Kalidasa also refers to Ujjain multiple times, and it appears that he spent at least a part of his life in Ujjain. "Mrichchhakatika" by Shudraka is also set in Ujjain. Ujjain also appears in several stories as the capital of the legendary emperor Vikramaditya. Somadeva's "Kathasaritsagara" (11th century) mentions that the city was created by Vishwakarma, and describes it as invincible, prosperous and full of wonderful sights.