Complex sentence: He was married on 6 May 1907 to Lokasundari Ammal (1892--1980) with whom he had two sons, Chandrasekhar and Radhakrishnan.
Split into simpler sentences: He was married on 6 May 1907 to Lokasundari Ammal (1892--1980). They had two sons, Chandrasekhar and Radhakrishnan.