"Ms. Rosenkrantz says Jennifer started as an obscure take on Guinevere that was rarely used before the mid-’50s. Golden Age Hollywood starlet Jennifer Jones made her first successful film in 1943, and the name’s popularity began to grow. But it wasn’t until 1970’s enormously well-received, if saccharine film Love Story featured the untimely death of a Jennifer, as played by Ali MacGraw, that the name vaulted to the top spot."