de Silva was born on 30 October 1936 in Maligakanda, Colombo. Her father, Don Simon de Silva worked as a supervisor at Ceylon Cargo Board Company. Her mother was Alice Silva. She has two sisters, Trilicia Kusuma and Merlyn Thilaka and one brother, Jayampath Sam. She completed education from Ananda Balika Vidyalaya, Kotte.

 

She was married to fellow actor Ravindra Rupasena from 11 November 1960 to his death in 1978. She met Rupasena during her maiden film Ahankara Sthree and then the couple appeared in many film together, including Surathali, Sohoyuro, Sundara Birinda, Suneetha and Nalagana. The couple has one son and one daughter. Her son, Bimal Yoga Sri was born on 13 September 1961 and daughter Poorna Priyadarshani was born on 1 June 1963.Purna is a talented lyricist.

 

Rupasena's younger sister was married to film producer Stanley de Silva. Rupasena has one brother, W.A. Keerthisena. Rupasena died from heart attack on 15 April 1978 at the age of 49. At the time of his demise, he was working as a Planner at the Irrigation Department in Colombo. Leena moved to Canada in 1991 and currently lives in Pickering, Ontario with her children.

 

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