Question: Who is the father of the Australian-born British actress, comedian and singer who starred in The Spider's Web?

Context articles: Judith Anderson
Judy Kelly
Roland Cunningham
Cicely Courtneidge
The Spider's Web (1960 film)
Margaret Johnston
George Salting
William Lawrence Bragg
Mavis Villiers
Nancy O'Neil

Dame Judith Anderson, AC, DBE (born Frances Margaret Anderson; 10 February 18973 January 1992) was an Australian-born British actress who had a successful career in stage, film and television.
 A preeminent stage actress in her era, she won two Emmy Awards and a Tony Award and was also nominated for a Grammy Award and an Academy Award.
 She is considered one of the 20th-century's greatest classical stage actors.
Judy Kelly (1 November 1913 – 22 October 1991) was an Australian-born British actress.
 She arrived in Britain in 1932 after winning a competition organised by the Australian British Empire Films, which included 3 months tuition at the British International Studios at Elstree.
 She appeared in a number of films for British International Pictures during the 1930s.
 She was sometimes cast as a love interest for the comedian Leslie Fuller, and also appeared alongside the musical stars Gene Gerrard and Stanley Lupino.
Roland Macquarie Cunningham (1872 – 3 May 1958) was an Australian-born British singer and actor of the late Victorian and Edwardian eras.
 He began his professional career in comic opera in London in 1895 and appeared briefly with the D'Oyly Carte Opera Company in 1899.
 In the early years of the next century, he appeared in Edwardian musical comedies in both Britain and America.
 In 1910, he starred in the long-running original London production of "The Chocolate Soldier".
Dame Esmerelda Cicely Courtneidge DBE (1 April 1893 – 26 April 1980) was an Australian-born British actress, comedian and singer.
 The daughter of the producer and playwright Robert Courtneidge, she was appearing in his productions in the West End, by the age of 16, and was quickly promoted from minor to major roles in his Edwardian musical comedies.
The Spider's Web is a 1960 British mystery film directed by Godfrey Grayson and starring Glynis Johns, John Justin, Cicely Courtneidge and Jack Hulbert.
 It was an adaptation of the play "Spider's Web" by Agatha Christie, and a rare Technicolor 'A' feature from the Danzigers.
 It was remade as a television special starring Penelope Keith and broadcast on 26 December 1982.
Margaret Johnston (10 August 1914, Sydney, New South Wales, Australia – 19 June 2002, Kingston upon Thames, England) was an Australian-born British actress.
 Johnston was best known for her stage performances, but also appeared in 12 films and a handful of TV productions before retiring from acting in 1968 to devote herself to running a theatrical agency.
George Salting (15 August 183512 December 1909) was an Australian-born British art collector.
 He had inherited considerable wealth from his father; Salting collected paintings, Chinese porcelains, furniture, and many other categories of art and decorative items.
 He left his paintings to the National Gallery, London, prints and drawings to the British Museum, and the remainder to the Victoria & Albert Museum, requesting that the collection be displayed intact rather than divided among the museum's departments.
Sir William Lawrence Bragg (31 March 1890 – 1 July 1971) was an Australian-born British physicist and X-ray crystallographer, discoverer (1912) of Bragg's law of X-ray diffraction, which is basic for the determination of crystal structure.
 He was joint winner (with his father, William Henry Bragg) of the Nobel Prize in Physics in 1915: ""For their services in the analysis of crystal structure by means of X-ray"", an important step in the development of X-ray crystallography.
Mavis Villiers (born Mavis Clare Cooney; 18 January 1911, Sydney – March 1976, Paddington, London), was an Australian-born British actress of stage, film and television.
 Her parents were John and Clara (née Villiers) Cooney.
 Her brother, Cecil Cooney, was a camera operator and cinematographer.
 Her stage name, Villiers, was taken from her maternal grandfather.
Nancy O'Neil (25 August 1911 – 5 March 1995) was an Australian-born British actress.