Shankarachya known as Adi Shankara, born 11th May 788 AD, at Kaladi near Kochi, Kerala.
He took Samadhi at the age of 33, at Kedar tirth.
He was a devotee of Shiva.
He was propounded the Doctrine of Advaita (Monism) and wrote many commentaries on the Vediccanon (Upanishads, Brahma Sutras and Bhagavad Gita) in Sanskrit.
He was opposed to Buddhist philosophers.
Major Work: Brahmasutrabhasya (Bhashya or commentary on the Brahma Sutra), Bhajagovinda Stotra, Nirvana Shatakam, Prakaran Granths.
Other Contributions: He was responsible for reviving Hinduism in India to a great extent when Buddhism was gaining popularity.
He established four Mathas in the four corners of India at Shingeri, Puri, Dwaraka and Badrinath– for propagation of Sanathana Dharma.