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 Shaquille O'Neal Facts Madonna Facts Dwayne Johnson Facts David Bowie Facts Ed Sheeran Facts Kylie Jenner Facts John Lennon Facts Justin Timberlake Facts