Question: Are Erin Wiedner and Peter Sasdy both directors?

Context paragraphs:
I Don't Want to Be Born: I Don't Want to Be Born (U.S.  The Devil Within Her; also known as The Monster) is a 1975 British horror film, directed by Peter Sasdy and starring Joan Collins, Ralph Bates, Eileen Atkins and Donald Pleasence, which tapped into the 1970s fad for devil-child horror films.  The film was originally marketed as a straight-faced and serious product, and as such was comprehensively mauled by critics of the time.  However it later gained a reputation as a cult film favourite due to its perceived shortcomings, absurdities and unintentional camp comedy appeal.

Journey into Darkness (film): Journey into Darkness is a 1968 British made-for-television film version of two episodes derived from the 1968–1969 anthology television series "Journey to the Unknown" starring Robert Reed and Jennifer Hilary, directed by Peter Sasdy and James Hill.  The episodes – "Paper Dolls" and "The New People" – were originally broadcast respectively on November 7 and 14, 1968 on ABC.

Doomwatch (film): Doomwatch (US title: Island of the Ghouls) is a 1972 science fiction/thriller film directed by Peter Sasdy.  The film is based on the BBC series "Doomwatch".  The screenplay was written by Clive Exton.

Erin Wiedner: Erin Wiedner (born in Mill Valley, California) is an American independent filmmaker, director and cinematographer.

Hands of the Ripper: Hands of the Ripper is a 1971 British horror film directed by Peter Sasdy for Hammer Film Productions.  It was written by L. W. Davidson from a story by Edward Spencer Shew, and produced by Aida Young.

Taste the Blood of Dracula: Taste the Blood of Dracula is a British horror film produced by Hammer Film Productions which was released in 1970.  It stars Christopher Lee as Count Dracula, and was directed by Peter Sasdy based upon a script by Anthony Hinds.  The film was released as a double bill alongside fellow Hammer production "Crescendo".

The Tenant of Wildfell Hall (1968 miniseries): The Tenant of Wildfell Hall is the first adaptation of Anne Brontë's novel of the same name, produced by BBC and directed by Peter Sasdy.  The serial stars Janet Munro as Helen Graham, Bryan Marshall as Gilbert Markham and Corin Redgrave as her spoiled and drunkard husband Arthur Huntington.

Peter Sasdy: Peter Sasdy (born 27 May 1935 in Budapest, Hungary) is a Hungarian-born British film and television director.

Nothing but the Night: Nothing But the Night is a 1973 British horror film directed by Peter Sasdy, starring Christopher Lee and Peter Cushing.

Welcome to Blood City: Welcome to Blood City is a 1977 film directed by Peter Sasdy.  It stars Jack Palance, Keir Dullea and Samantha Eggar.

Supporting paragraphs: Erin Wiedner Peter Sasdy
Answer: yes