Question: What was the birth name of the singer Evensong is based on?

Context paragraphs:
Nellie Melba: Dame Nellie Melba GBE (19 May 186123 February 1931), born Helen Porter Mitchell, was an Australian operatic soprano.  She became one of the most famous singers of the late Victorian era and the early 20th century.  She was the first Australian to achieve international recognition as a classical musician.  She took the pseudonym "Melba" from Melbourne, her home town.

Goodman, Lieber, Kurtzberg &amp; Holliway: Goodman, Lieber, Kurtzberg & Holliway is a fictional law firm appearing in American comic books published by Marvel Comics.  The firm is commonly depicted in the pages of the "She-Hulk" comic books - named after Marvel Founders Martin Goodman, Stan Lee, under his birth name Stanley Lieber, and Jack Kirby, using his birth name Jacob Kurtzberg.  Created by Dan Slott, senior GLK&H law partner Holden Holliway first appeared in "She-Hulk" #1 (May 2004), where he hired the titular heroine to be a lawyer for his law firm, but as Jennifer Walters.

Elf (album): Elf is the first album by Ronnie James Dio's blues rock band called Elf.  Produced by Ian Paice and Roger Glover of Deep Purple, the record was released in 1972.  In this album, Dio is listed by his birth name Ronald Padavona.  Though Dio had used "Padavona" for songwriting credits on earlier singles, Dio explained in an interview in 1994 that he used his birth name on this album as a tribute to his parents so that they could see their family name on an album at least once.

Chesney and Wolfe: Ronald Chesney (birth name René Cadier; born 1922) and Ronald Wolfe (birth name Harvey Ronald Wolf-Lubbroff; 8 August 1922 – 18 December 2011) were British TV comedy screenwriters, best known for their popular (and most successful) 1960s and 1970s sitcoms, "The Rag Trade" (1961–63, 1977–78), "Meet the Wife" (1963–66), "On the Buses" (1969–73) and Romany Jones (1972–75).

Gerrie (given name): Gerrie is Dutch and Afrikaans unisex given name.  It is a diminutive of Ger, itself short for Gerard.  As a birth name in the Netherlands, it is primarily feminine, peaking in popularities around 1950, but the name is more common as a nickname for men with the birth name Gerard(us) or Gerrit.

Stereolizza: Stereolizza (before 2009 – Stereoliza), is an urban pop band, based in Los Angeles, California.  The core of the group is "Lizza" (birth name – Kateryna Shalayeva) – lead singer and songwriter; and "AlecZero" (birth name - Oleksiy Ginchev) – songwriter, record producer, multi-instrumentalist.

California Birth Index: The California Birth Index (CABI) is a database compiled by the California Office of Health Information and Research.  The index contains birth records of all registered births in California between 1905 and 1995.  Each record is an abstract of a person's birth certificate, including date of birth, full name, county of birth, gender, and mother's maiden name.  People who have been adopted are sometimes listed by their birth name, sometimes listed by their adopted name, sometimes by both and sometimes not listed at all.  The CABI is considered a valuable genealogy tool but is also criticized for privacy issues.  California began statewide civil registration of births on July 1, 1905.  Earlier birth records may exist in the county where the birth took place or at the church where a baptism took place.

Mental As Anything: Mental As Anything are an Australian new wave/pop-rock band that formed in Sydney in 1976.  Its most popular line-up (which lasted from 1977-1999) was Martin Plaza (birth name Martin Murphy) on vocals and guitar; Reg Mombassa (birth name Chris O'Doherty) on lead guitar and vocals; his brother Peter "Yoga Dog" O'Doherty on bass guitar and vocals; Wayne de Lisle (birth name David Twohill) on drums; and Andrew "Greedy" Smith on vocals, keyboards and harmonica.  Their original hit songs were generated by Mombassa, O'Doherty, Plaza and Smith, either individually or collectively; they also hit the Australian charts with covers of songs by Roy Orbison, Elvis Presley and Chuck Berry.

Group Home: Group Home is a hip hop duo, composed of members Lil' Dap (birth name James Heath) and Melachi the Nutcracker (birth name Jamal Felder).  They came to prominence as members of the Gang Starr Foundation.  Lil' Dap made his rhyming debut on Gang Starr's 1992 classic "Daily Operation" on the song "I'm the Man".  Both members appeared on Gang Starr's critically acclaimed 1994 effort "Hard to Earn", on the tracks "Speak Ya Clout" and "Words from the Nutcracker".  In 1995, the group released its debut album, "Livin' Proof".  The album was very well received, mainly due to DJ Premier's advanced production work, described by "Allmusic" as "rhythmic masterpieces".  A second album "A Tear for the Ghetto" was released in 1999, this time with only one track produced by DJ Premier.

Evensong (film): Evensong is a 1934 British musical film directed by Victor Saville and starring Evelyn Laye, Fritz Kortner and Emlyn Williams.  It is loosely based on the story of the singer Nellie Melba.  It was also the first film of Alec Guinness, who appears as an uncredited extra.

Supporting paragraphs: Evensong (film) Nellie Melba
Answer: Helen Porter Mitchell