The document describes the family relationships within the Simpsons family. It outlines that Homer and Marge are married and have three children - Bart, Lisa, and Maggie. It then expands out to include their parents and in-laws, establishing that Marge's family includes her parents Abraham and Mona as well as her sisters Patty and Selma. Patty and Selma both have additional family members that bring them into relationship with the Simpsons children as aunts and cousins.