Ganesan was the son of Ramaswamy and Bhagirathi Amma. Ramaswamy married Bhagirthi Amma (or Bagirathi Amma), a woman of his mother's Devadasi community(singer and dancer in Temple). Notable among Narayanaswami's children with Chandramma were Muthulakshmi and Ramaswamy, father of Gemini Ganesan. Later in life, after losing his first wife, Narayanaswami married a Devadasi girl Chandramma who served as musician and dancer in a Temple. Ganesan's grandfather, Narayanaswami, was the principal of the Maharajah's College, Pudukkottai. Gemini Ganesan was born in a brahmin family as Ramasamy Ganesan in 1920 to Ramasamy Iyer and Gangammal. He had eight children, including actress Rekha. Despite his celebrated film career, Ganesan's personal life, particularly his marriages to multiple women over the years, including famous Indian actress Savitri, has often been a subject of criticism.
His performances on the screen were enhanced by successful playback singers such as A.
In his long film career spanning over five decades, Ganesan acted in more than 200 films. However, unlike Sivaji Ganesan or Ramachandran, Gemini Ganesan was not a stage performer and was never involved in politics. After playing the lead role in Manam Pola Mangalyam (1954), he finally acquired star status. Gemini Ganesan made his debut with Miss Malini in 1947 but was noticed only after playing the villain in Thai Ullam in 1953. He is one of the few college graduates to enter the film industry at that time. A recipient of the Padma Shri in 1971, he had also won several other awards including the "Kalaimamani", the "MGR Gold Medal" and the "Screen Lifetime Achievement Award". Ramachandran was popular as an action hero, Gemini Ganesan was known for his romantic films. While Sivaji Ganesan excelled in dramatic films and M. Ganesan was one of the "three biggest names of Tamil cinema", the other two being M. He was nicknamed "Kaadhal Mannan" (King of Romance) for the romantic roles he played in films. Ramasamy Ganesan (17 November 1920 – 22 March 2005), better known by his stage name Gemini Ganesan, was an Indian actor who worked mainly in Tamil cinema.