Question: Clive Dunn is the cousin of which English actress and dancer?

Context articles: Clive Dunn
Grandad (song)
Just like a Woman (1967 film)
Ian Lavender
My Old Man (TV series)
Eric Dunn
Gretchen Franklin
Moore Marriott
Happy Holidays (TV series)
Lance Corporal Jones

Born in Brixton, South London, Dunn was the son of actor parents, and the cousin of actress Gretchen Franklin.
 Dunn was educated at Sevenoaks School, an independent school for boys (now co-educational).
 After leaving school, Dunn studied at the independent Italia Conti Academy of Theatre Arts, in London.
"Grandad" is a popular song by Herbie Flowers and Kenny Pickett, and recorded by Clive Dunn.
Just like a Woman is a 1967 British comedy film written and directed by Robert Fuest and starring Wendy Craig, Francis Matthews, Dennis Price and Clive Dunn.
 The film's plot follows a wealthy couple who work in the entertainment industry and decide to separate, but soon begin to miss each other.
Arthur Ian Lavender (born 16 February 1946) is an English stage, film and television actor, best known for his role as Private Pike in the BBC comedy series "Dad's Army".
 Following the death of Clive Dunn in 2012, he is the last surviving cast member to have played a character in the platoon and, with Frank Williams, is one of only two surviving major cast members.
My Old Man is a popular but short-lived English sitcom starring Clive Dunn as retired and embittered engine driver Sam Cobbett.
 ITV broadcast 13 episodes in two series during 1974 and 1975.
Air Marshal Sir Eric Clive Dunn (27 November 1927 – 16 July 2008) was a senior Royal Air Force officer.
Gretchen Franklin (7 July 1911 – 11 July 2005) was an English actress and dancer with a career in show business spanning over eighty years.
 She was born in Covent Garden, west London.
 She played Ethel Skinner in the long-running BBC 1 soap opera "EastEnders" on a regular basis from 1985 until 1988.
 After this she returned to the show intermittently.
 These appearances became briefer and more widely spaced as time went on.
 Her final appearance was in 2000, when her character was killed off.
Marriott was born at Alpha Place, Yiewsley, Middlesex, on 14 September 1885, the son of George Matthew Marriott (1859-1940), who was then a commercial traveller, and his wife, Edith Rousby, née Coleman (1864-1946).
 His parents were actors, and his father became a theatrical manager.
 Moore Marriott made his stage debut at the age of five.
 He had originally intended to train as an architect, but instead he became an actor in films.
 Rather like Clive Dunn and Wilfred Brambell later, he became typecast as playing old men when he was still relatively young.
 He had a special set of artificial teeth which he would put in to play his 'old man' characters.
 He had no teeth in real life and took four different sets of false teeth with him to achieve variety in his characters.
Happy Holidays was a British television mini-series aired on the BBC during 1954.
 Cast included Hattie Jacques, John Le Mesurier, Clive Dunn, Carole Lorimer, Colin Campbell, Robert Scroggins, Anthony Lang.
 Although telerecording existed, none of the episodes remain in the archives.
Lance Corporal Jack Jones is a fictional Home Guard platoon lance corporal, veteran of the British Empire and butcher, portrayed by Clive Dunn in the BBC television sitcom "Dad's Army".
 His catchphrases are "Don't panic!"
, "Permission to speak, sir?"
 and "They don't like it up 'em!"
.
 Jones also often recounts his past military experiences particularly those in Sudan and India and gives a glimpse to the military traditions and events in the concluding years of the 19th century.