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 Lena Headey Facts Kanye West Facts Steve Jobs Facts Michael Schumacher Facts Mike Tyson Facts Amy Winehouse Facts Madonna Facts Adam Driver Facts