Mrs. Clark

Mrs. Clark is Lewis' mother.

History
She was seen in church with her son and husband.

She and her husband were among the parents complaining at Springfield Elementary School.

Mrs. Clark was seen with her husband at a restaurant with several knick-knacks on the walls.

Lewis' parents were seen in line for Bart's pregnancy voodoo, implying they want another child.

Non-canon
When Homer gave Nelson his role as bad news bearer, Nelson told Lewis his parents were getting divorced.