Frances Conroy (born March 15, 1953) is an American actress. She is most widely known for playing the matriarch Ruth O'Connor Fisher Sibley on the HBO funeral drama series Six Feet Under, which earned her a Golden Globe in 2004.
This prequel series to the Robert C. O'Brien novel (and effectively the Don Bluth film) depicts the rats of NIMH as they escape confinement, come together as a society, and make a series of remarkable discoveries.