Cynthia Jefferies [Edit] By Sticky Facts Editorial StaffCynthia Jefferies biography, ethnicity, religion, interesting facts, favorites, family, updates, childhood facts, information and more:When did Cynthia Jefferies die?March 3, 1983Why did Cynthia Jefferies die?Suicide-Drug overdose Tags: death day 3death month marchdeath year 1983 Suggested Posts Stephen Hawking Facts Brad Pitt Facts Julia Roberts Facts Anna Nicole Smith Facts Arnold Schwarzenegger Facts Neymar Facts Leonardo DiCaprio Facts Sylvester Stallone Facts