Radha the Gopi
In the story of Krishna, as told in the Mahabharata and the Bhagavata Purana, he spends much of his childhood in the company of young cow-herd girls, called Gopis in the village of Madhuvan. Krishna left his native place at the age of twelve for study at gurukul .The Mahabharata does not describe Krishna's earlier life in Vrindavan in much detail, and focuses more on the later battle of Kurukshetra but within the Bhagavata Purana the child-hood pastimes of Krishna are described very vividly. Within the Bhagavata Purana, Radha is not mentioned by name but is alluded to within the tenth chapter of the text as one of the gopis whom Krishna plays with during his upbringing as a young boy. Krishna left Vrindavan for Mathura at the age of 10 years and 7 months according to Bhagavata Purana. So Radha is assumed to be also 10 years old or less when Krishna left Vrindavan. It is in later texts such as the Gita Govinda where we find the story of Radha given in more detail.