In the fourth season, Helen works with Louise as volunteers at the Help Center, a social services facility, which opened in 1977.
His daughter, Jenny Willis (who more resembles her mother in skin color), marries George's son, Lionel, in 1976.
He develops a strong relationship with Jenny, but was never close to his "white" son, Allan Willis (Jay Hammer) because he never finished school and left New York City and stayed in Paris for two years.
Andrew Rubin appears as this character in the first season finale episode entitled "Jenny's Low" (aired on April 12, 1975), in which Allan returns from Europe, and is treated coldly by his sister.
Her first appearance was in the All in the Family episode "Lionel's Engagement," when she takes offense at being referred to as "mammy" by Archie Bunker, who thinks the term is a variation of "mommy."
Mother Jefferson is a catty, disparaging and antagonistic mother-in-law to Louise, while appearing to be a sweet old lady to everyone else.
A long-running gag had Mother Jefferson blissfully ignorant of how much alcohol she actually consumes, usually in the form of a Bloody Mary, which she stated she drank "for the vitamins".
She died early in the fourth season, and the writers decided to eliminate Mother Jefferson's character rather than to replace her with a different actress.
Despite being a decent Christian woman (as Gibbs is in real life), Florence never kept a long relationship with men.
In a second-season episode, Florence contemplates suicide but is talked out of it by George, who shows his humanity despite his gruff exterior.
In an early third-season episode, Florence becomes the Jeffersons' full-time maid, taking Lionel's room after he marries Jenny and finds a place of his own.
Gibbs starred as Florence in the failed spinoff series Checking In, in which the character became the head of housekeeping for a large hotel.
He is known as a kind, gentle fellow, but George mostly finds him to be weird and annoying, frequently slamming the door in his face.
Ralph Hart (Ned Wertimer) is the money-crazed doorman of the high-rise Colby East apartment complex.
Charlie (Danny Wells) owns a bar in the first-floor lobby of the Colby East apartment complex.
Marcus Garvey Henderson (Ernest Harden Jr.) is George's young employee at Jefferson Cleaners.
Marcus grew up in a rough neighborhood and steals a jacket from the store on his first day, blaming it on his station in life.