Mirra Alfassa also known as The Mother, was the spiritual collaborator of Sri Aurobindo. Her full name at birth was Blanche Rachel Mirra Alfassa.

She came to Sri Aurobindo's spiritual retreat on 29 March 1914 in Pondicherry, India. Having to leave Pondicherry during World War I, she spent most of her time in Japan where she met the Nobel laureate poet Rabindranath Tagore. Finally she returned to Pondicherry and settled there in 1920. After 24 November 1926, when Sri Aurobindo retired into seclusion, she founded his ashram (Sri Aurobindo Ashram), with a handful of disciples living around the Master. She became the spiritual guide of the community.