While in a drama tour of
Coimbatore, Rathnam was impressed by the histrionic skills of
C. T. Rajakantham, daughter of the owner of the house in which they stayed and inducted her into his troupe. The two became a successful comedy pair and acted together in a number of movies. Prior to this, Rathnam had married twice. The first wife's name was Kunjammal who died at a young age. Rathnam and Kunjammal had two daughters Meenalochani and Lokanayaki(late). Then he married his second wife Pichaimmal(late). Rathnam and Pichaimmal had a son Shanmuga Sundaram (Retd PWD Superintendent Engineer). Rathnam died when his son was nine months old. Shanmuga Sundaram married Chandra, daughter of his sister Meenalochani RajaRam. Now(2020) Meenalochani RajaRam, Shanmuga Sundaram and Chandra are living in Kumbakonam. == Death ==