Mrs. Frisby

Mrs. Frisby is the protagonist of the book Mrs. Frisby and the Rats of NIMH. She is a widowed field mouse who lives with her 4 children, Martin, Teresa, Cynthia, and Timothy in a cinderblock in the fields of the Fitzgibbon farm. Her deceased husband is Jonathan Frisby, who was killed by drugging the farmer's cat, Dragon. Ultimately, she assists the mysterious rats of NIMH in their plans to move out of the farm and stop stealing its resources in return for helping her to move her sick son Timothy.

Info about the book:

Mrs. Frisby and the Rats of NIMH is a 1971 children's book by Robert C. O'Brien, with illustrations by Zena Bernstein. The winner of the 1972 Newbery Medal, the story was adapted for film as The Secret of NIMH.

Trivia

 * In the film, The Secret of NIMH, Mrs. Frisby was renamed Mrs. Brisby for fear of copyright issues with the Frisbee toy.
 * Mrs. Frisby was also given a red gem necklace from Nicodemus that saved her house, which appears to be a cinder block, and her children in the film.