Meera, also known as Mira Bai,was a 16th century Hindu mystic poetess sant and devotee of Krishna. She is celebrated as a Sant of Bhakti movement, particularly the Krishna-focussed Vaishnavism denomination of Hinduism, in northern and western India.
Meera was born in a royal family of Rajasthan, and her education included music, religion, politics and government. She married Bhojraj the crown prince of Mewar in 1516, her husband was wounded in 1518 and died in 1521 after a Hindu-Muslim battle, her own father died in a war with Babur's army in 1527, and little else is known about her life with any certainty. She is mentioned in Bhaktamal, confirming that she was widely known and a cherished figure in the Indian bhakti movement culture by about 1600 CE. Most legends about Meera mention her fearless disregard for social and family conventions, her devotion to god Krishna, her treating Krishna as her lover and husband, and she being persecuted by her in-laws for her religious devotion.
Thousands of devotional poems in passionate praise of Lord Krishna are attributed to Meera in the Indian tradition, but just a few hundred are believed to be authentic by scholars, and the earliest written records suggest that except for two poems, most were written down only in the 18th century. Many poems attributed to Meera were likely composed later by others who admired Meera.
Meera poems are dedicated to Krishna calling him the Dark One or the Mountain Lifter. Meera's poems are lyrical padas (metric verses). While thousands of verses are attributed to her, scholars state that only a small fraction of those are authentic. There are no surviving manuscripts of her poetry from her century, and the earliest records with two poems credited to her are from early 18th-century, more than 150 years after she died. The largest collection of poems credited to her are in 19th-century manuscripts. Scholars have attempted to establish authenticity based on both the poem and Meera being mentioned in other manuscripts as well as from style, linguistics and form.
In her poems, Krishna is a yogi and lover, and she herself is a yogini ready to to take her place by his side unto a spiritual marital bliss. Meera's style combines impassioned mood, defiance, longing, anticipation, joy and ecstasy of union, always centered on Krishna.
Source : https://en.wikipedia.org/wiki/Meera