The kumbabishekam was performed in June 2012 . He was born Lakshmikanthan to Narasimha Sastri and Lakshmi in 1889. Mahadevendra Saraswathi V was the 67th Shankaracharya of the Kanchi matha. (Pic taken from the official website of the kamakoti peetam) Swaminathan ascended the Kanchi Kamakoti Peetham on 13 February 1907 as the sixty eighth Acharya with the Sannyasa name Chandrasekhara Saraswati. This is in addition the jeeva samadhi adhishtanam of Shri Sri Vyasachala Mahadevendra Saraswati the 54 th Pontiff of the Kanchi Kamakoti peetam. It is supposed to be "Sri Mahadevendra Saraswathi VI" according to the Kanchi matha page that lists the acharyas (where the 67th acharya was listed in error again as Sri Mahadevendra Saraswathi V, when in fact Sri Mahadevendra Saraswathi V is listed as the 63rd acharya) It is also said that he was named Lakshminarasimha (Combining his parent's Name) He was given the title Mahadevendra Saraswathi and made the Shankaracharya in 1907. I believe the title "Sri Mahadevendra Saraswathi V" is in error. I had read a lot about this temple being 1200 years old and being rebuilt after 1948.
As per the usual training given to the seers, he was well trained with the Vedas, puranas, various hindu texts and ancient Indian literature.