And Sylvia Plath, and Sylvia Browne, and the singer Sylvia, and Sylvia Sidney, and Sylvia Ashton-Warner.
A whole bunch of Sylvias, and the name is so well-known that a single famous murder victim back in the 1960s is not going to make much of an impression.
No more so than the name Sharon happening to belong to Sharon Tate is going to mean much to anybody these days, and probably not even back then.
Before you criticize a man, walk a mile in his shoes. That way, when you criticize him, you're a mile away and you have his shoes!
Steve Martin