Analysis of information sources in references of the Wikipedia article "Sister Christian" in English language version.
Specifically, the song is about Keagy's little sister, Christy. Keagy wrote the song at his apartment, near Divisadero and California streets in San Francisco, after he had just returned from a visit to his hometown in rural Oregon. He had been struck at how fast his teenage sister, 10 years younger than he was, was growing up.
