Kausalya
Proper noun
Meaning
(Hinduism) The eldest wife of King Dasaratha, queen of Ayodhya and the mother of Rāma.
A female given name from Sanskrit, of chiefly Indian usage.
Source: en.wiktionary.orgExamples
As a consequence, Rama is first born to Kausalya, Bharata is born to Kaikeyi, Lakshmana and Shatrughna are born to Sumitra.
He had three wives: Kausalya, Kaikeyi and Sumitra.