Margaret SquarePants is the mother of SpongeBob SquarePants, the wife of Harold SquarePants, the daughter-in-law of Grandpa SquarePants and Grandma SquarePants, and also the sister-in-law of Blue SquarePants and Sherm SquarePants.


  • Harold SquarePants (husband)
  • SpongeBob SquarePants (son)
  • Grandpa SquarePants (father-in-law, deceased)
  • Grandma SquarePants (mother-in-law)
  • Blue SquarePants (brother-in-law)
  • Sherm SquarePants (brother-in-law)
Community content is available under CC-BY-SA unless otherwise noted.