Non-Canon Character Notes: So, here I'm compiling all the 'non-canon' ideas I've used for various canon characters. Since many things contradict I'm noting the 'source' of the information. That is, which story it derives from.
I'll also note any popular culture references by noting who or who's work they are a reference to: D stands for Charles Dickens, S stands for Shakespeare, RHf stands for Rocky Horror fandom, RHa stands for "Rocky Horror actors", M stands for "[other] movie".
Name: Laura Trent
Other name(s): Columbia, Laura Krupke [SNW, M]
DOB: May 24, 1955 [SFFA, RHa]
Birthplace: Denton, Ohio
DOD: 1974 [SFFA]
Parents: Judy and Fred Trent [SFFA], Davis E. Trent [MUC]
Significant Other(s): Eddie, Frank N. Furter
Children: Pip [SFFA], Rosaline Katerina Ophelia [WHTSN, S]
Siblings: Helena 'Nell' Trent [SFFA], Agnes and Rose [LNATFP]
Other Family: "Granny" [LNATFP]
Out-of-universe ownership: 20th Century Fox
Name: Janet Weiss
Other names: Janet Majors, Mrs. Brad Majors
DOB: October 4, 1946 [SFFA, RHa]
Birthplace: Denton, Ohio
Parents: Susan (nee Oakley) and Ethan Weiss [SFFA]
Significant Other(s): Brad Majors
Children: Estella Fay Majors [SFFA, D]
Siblings: James Weiss and Emily Gallagher [SFFA]
Out-of-universe ownership: 20th Century Fox