Trivia

His first school was Kithulampitiya Central Girls' College. Then he moved into Matara, and studied at Sumangala Vidyalaya, Matara and then to St. Thomas' College, Matara until S.S.C exam. He was expelled from the school due to his misbehaviors and finally attended Vidyaloka College, Galle. He was selected to University of Colombo for higher studies on Economics, Indian history and Sinhala.

Has two daughters.

Has three brothers.

In 2005, Jayasiri translated the television script Sanda Mudunata which was originally written by director Samy Pavel in French.

Known for his versatility as an actor, lyricist, and screenwriter, Jayasiri's contributions to cinema, stage, and television have left an indelible mark.

His debut role in the 1973 film Dahakin Ekek was a minor one, but his acting career took off in the 1990s.

After series of losses in drama career, he went to Saudi Arabia for work in US company. After few years, he returned and started to play in drama again.

He became popular with the films Seilama and Visidela, both directed by H. D. Premaratne.

In 2012, he received the Derana Lux Film Award for Best Supporting Actor for his performance in Gamani, a film that touched on the complex socio-political landscape of Sri Lanka.

Jaysiri was also a close friend of renowned director Dharmasena Pathiraja, at that time he used to play cameo roles in stage dramas. According to him, he started to play major roles only after he turned 40 years of age.

In 1997, he won the Presidential Film Award for Best Supporting Actor for his role in Duwata Mawaka Misa.

He is the lyricist of popular film Bambaru Awith.

His critically acclaimed stage drama acting came through stage drama Mara Sade in 1985, which is considered a milestone in the Sinhala theater.

His career spanned over five decades, during which he worked across multiple media platforms, becoming a beloved figure in Sri Lanka's entertainment industry.

Although he faced challenges, including a suspension from school due to misbehavior, Jayasiri's resilience guided him towards higher education. He pursued a degree at the prestigious University of Colombo, focusing on economics, Indian history, and Sinhala.