Archie Bunker's Place to Soap
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Archie Bunker's Place
All in the Family
All in the Family later spun off Gloria and was reworked into Archie Bunker's Place.
Maude
The first All in the Family spinoff character was Maude. Maude was Edith Bunker's cousin.
Hanging In
Hanging In (and Maude's) Maggie Gallagher crossed over onto Soap for 10 episode
Soap
Maggie Gallagher from Hanging In crossed over onto Soap