Abraham is Lisa's...
Grandfather
Herb is Bart's...
Uncle
Patty is Lisa's...
Aunt
Ling is Bart's...
Cousin
Mona is Maggie's...
Grandmother
Marge is Lisa's...
Mother
Homer is Maggie's...
Father
Bart is Selma's...
Nephew
Clancy is Marge's...
Father
Herb is Homer's...
Brother
Lisa is Bart's...
Sister