SriVaikuntaVasi. Sri. U.Ve. Purisai Nadadur Krishnamachariar Swami
Sri. Purisai Krishnamachariar Swami is a well known SriBhashya Simmasanathipathi and grandson of Sri. Injimettu Azhagiyasingar. He has the distinction of being sampadakar (editor) of SriNrisimha Priya for more than 50 years.
Please take a look into the following articles about Sri. Purisai Swami.
Biography of Sri. Purisai Nadadur Krishnamachariar Swami
An article about Sri. P.N.K Swami in the HINDU newspaper
Part of a Preface of a book that talks about Swami's lineage