Question: When was the source that defines "Independent Woman" as “A woman who pays her own bills, buys her own things, and does not allow a man to affect her stability or self-confidence" founded?

Context articles: Eleanor Searle
Bathroom bill
Urban Dictionary
Muthyamantha Muddu
The Pleasure Principle (song)
The French Lieutenant's Woman
The Bachelorette (season 8)
Eustadiola
Colette Sheward
Independent woman

Eleanor Searle Whitney McCollum (c. 1908 – August 12, 2002) was an independent woman of means who was married to two important American men, Cornelius Vanderbilt Whitney and Leonard "Mac" McCollum.
 She achieved a unique and separable identify as a philanthropist and community organizer in Houston, TX.
 Her contributions included the establishment of the Eleanor McCollum Competition for Young Singers of Houston Grand Opera, patronage for Orbis International, and, together with her second husband, an important role in the development of Baylor College of Medicine.
A bathroom bill is the common name for legislation or a statute that defines access to public facilities — specifically restrooms — by transgender individuals.
 Bathroom bills affect access to sex-segregated public facilities for an individual based on a determination of their sex as defined in some specific way – such as their sex as assigned at birth, their sex as listed on their birth certificate, or the sex that corresponds to their gender identity.
 A bathroom bill can either be inclusive or exclusive of transgender individuals, depending on the aforementioned definition of their sex.
Urban Dictionary is a crowdsourced online dictionary of slang words and phrases that was founded in 1999 as a parody of Dictionary.com and Vocabulary.com by then-college freshman Aaron Peckham.
 Some of the definitions on the website can be found as early as 1999, but most early definitions are from 2003.
 At the start of 2014, the dictionary featured over seven million definitions, while 2,000 new daily entries were being added.
 In November 2014, the Advertise page of the website states that, on a monthly basis, Urban Dictionary averages 72 million impressions and 18 million unique readers.
 Anyone with either a Facebook or Gmail account can make a submission to the dictionary, and it has been stated that entries are reviewed by 20,000 volunteer editors.
Vidyadhari (Seeta) is an independent woman who likes to work hard and be sincere.
 She hates the likes of men because of a past incident in her life that scars her emotionally.
 One day, her serpentine boss Chakradhar (Sudhakar) whose desire to bed her backfires when a strange man Anudeep (Rajendra Prasad) walks into her office and turns Chakradhar plan against him and leaves her with a mystery shrouding his past.
 The story shows how Anudeep always shows up at the very moment Vidyadhari lands in trouble.
 This perplexes her but the truth is far stranger than fiction.
 Who is Anudeep and what his true intentions forms the crux of the story?
"The Pleasure Principle" is a song by American singer-songwriter Janet Jackson, recorded for her third studio album, "Control" (1986).
 It was written by and produced by Monte Moir, and was released as the sixth single from the album on May 12, 1987 by A&M Records.
 "The Pleasure Principle" is an "independent woman" anthem about love gone wrong built around a dance beat.
 The photo for the single cover was shot by fashion photographer David LaChapelle.
The French Lieutenant's Woman is a 1969 postmodern historical fiction novel by John Fowles.
 It was his third published novel, after "The Collector" (1963) and "The Magus" (1965).
 The novel explores the fraught relationship of gentleman and amateur naturalist Charles Smithson and Sarah Woodruff, the former governess and independent woman with whom he falls in love.
 The novel builds on Fowles' authority in Victorian literature, both following and critiquing many of the conventions of period novels.
The Bachelorette 8 is the eighth season of ABC reality television series "The Bachelorette".
 The show premiered on May 14, 2012, featuring Emily Maynard dating 25 men.
 Maynard chose Brad Womack in the fifteenth season of "The Bachelor" because she's an independent woman capable of picking her own man, but they split after the show.
Eustadiola (594–684) was an independent woman of Bourges who lived a life of piety apart from any formal rule and was subsequently regarded as a saint.
 Her "vita" (biography) was written in the early eighth century and is found embedded in the "vita" of her contemporary and fellow saint, bishop Sulpicius of Bourges.
 Informal, unsupervised asceticism had been generally disapproved of by the ecclesiastical hierarchy since the time of Gregory the Great, but it was still widespread in Gaul in the seventh century.
Colette Sheward is a fictional character from the BBC medical drama "Holby City", played by actress Louise Delamere.
 She first appeared in the series sixteen episode "Fait Accompli", broadcast on 3 December 2013.
 Colette serves as the Director of Nursing Services at Holby City.
 Delamere was approached for the role and not required to audition.
 Colette is characterised as a "headstrong" and "compassionate" career woman who fiercely defends her team of nursing staff.
 Delamere decided that Colette should not have children to represent independent woman.
 But her solitary trait often leaves her isolated.
 Colette was introduced as an old friend of CEO Guy Self (John Michie).
 He offers the job without interviewing her which attracts internal scrutiny.
 Colette's role at the hospital demands respect from those in nursing roles.
 While she also maintains influence to reprimand doctors and consultants operating mistreating nurses.
 Jane Simon of the "Daily Mirror" predicted viewer popularity for Colette.
 She liked her brash persona and reporters from "Inside Soap" and "What's on TV" called her a "no-nonsense" character.
"Independent woman" is a term explored by various sources in popular culture.
 Rapper Roxanne Shanté’s 1989 rendition of “Independent Woman” highlighted relationships and asked women not to dote on partners who do not reciprocate.
 Similarly, the definition of an “Independent Woman” in the Urban Dictionary is “A woman who pays her own bills, buys her own things, and does not allow a man to affect her stability or self-confidence.
 She supports herself entirely on her own and is proud to be able to do so.”