Wife of Atrus in the computer games Myst and Riven, and in the books Myst: The Book of Atrus and Myst: The Book of D'ni. Catherine was born on Riven and originally worked for Atrus's evil father Gehn until Atrus set her free. She has two sons, Sirrus and Achenar and is one of the two non-D'ni who can Write (the other being Atrus's grandmother Ti'ana).