Rohini Devi
In Hinduism, Rohini (Sanskrit: रोहिणी, rohiṇī) is a consort of Vasudeva. She is the mother of Balarama and his sister Subhadra, the siblings of the god Krishna. She played a prominent role in the nurture of Krishna. She was a partial incarnation of Surabhi, the mother of the cows.
Vasudeva's imprisonment
Rohini's husband, Vasudeva, was also married to another lady, Devaki. Immediately after the wedding of Devaki and Vasudeva, a divine voice from the sky (also called "Akashvani" predicted the death of Devaki's evil brother Kansa at the hand of "the eighth son of Devaki". Kansa then resolved upon killing all the progeny of Devaki immediately upon birth, and imprisoned the newly-wed couple without further ado. This left the distraught Rohini alone, albeit at liberty.
Kansa proceeded to personally kill each child born to the imprisoned couple immediately after its birth. In due course, Devaki found herself pregnant for a seventh time. However, this seventh child was not to meet the fate of the six previous infants; the unborn child was miraculously transferred from the womb of Devaki to the womb of Rohini, who had long been craving a child of her own. The child thus born was named Balarama, and grew to be a great warrior and support of his younger brother Krishna.