Yellowknife-born actress and activist Margot Kidder has died.

Kidder was born in Yellowknife in 1948, and first rose to fame in 1978 playing Lois Lane in the Superman films.

The actress died in her sleep May 13 at her home in Livingston, Montana.

The Yellowknife street Lois Lane in Old Town was named after Kidder’s character from the films.