Question: Cynthia was codename for what American spy?
Sentence (from "William Stephenson"): Sir William Samuel Stephenson, CC, MC, DFC (23 January 1897 – 31 January 1989) was a Canadian soldier, airman, businessman, inventor, spymaster, and the senior representative of British Security Coordination (BSC) for the entire western hemisphere during World War II.
Relevant evidence: Yes