Question: Who wrote the play where Joanna Horton appeared as Helena?

Context articles: The Long Haul (autobiography)
Joanna Horton
The Trip to Bountiful
Demetrius (Shakespeare)
St Helena (play)
Will Horton
Horton Hears a Who! (TV special)
Seussical
All's Well That Ends Well
Holiday (1938 film)

The Long Haul is an autobiography of Myles Horton, labor organizer, founder of the Highlander School and perhaps the first practitioner of what would later be called popular education.
 Highlander used the principles of democratic education - where students were the authorities in the classroom, the teacher is a facilitator, and the focus of education is teaching collective action for social change - to play a key role in the labor movement of the 1930s and the Civil Rights Movement of the 1960s to 1970s.
 Horton pioneered many of the educational principles Paulo Freire would make famous worldwide in the 1980s.
Joanna Horton is an English actress, notable for her stage and television work, including an episode of "Robin Hood" (series 1 episode 4), "Father Brown", "Spooks" and "Foyle's War".
 During summer 2013 she is appearing with the Royal Shakespeare Company as Celia in "As You Like It" and Helena in "All's Well That Ends Well".
The Trip to Bountiful is a 1985 film starring Geraldine Page, John Heard, Carlin Glynn, Richard Bradford and Rebecca De Mornay.
 It was adapted by Horton Foote from his play of the same name and directed by Peter Masterson.
 The film features a soundtrack by J.A.C. Redford featuring Will Thompson's "Softly and Tenderly" sung by Cynthia Clawson.
 Geraldine Page won the Academy Award for Best Actress for her performance as Mrs. Watts and Horton Foote was nominated for the Academy Award for Best Adapted Screenplay.
Demetrius is one of the iconic lovers in William Shakespeare's play A Midsummer Night's Dream.
 He is a young Athenian man who is engaged to a young Athenian girl, Hermia.
 He claims to love but really just appears this way to gain Duke Theseus' and Egeus' support(in one interpretation).
 However, Hermia does not love Demetrius, but instead she loves a man called Lysander.
 Demetrius follows Hermia and Lysander into the woods once they have fled Athens whilst Helena follows him.
 Helena craves Demetrius' love but he doesn't return her love and instead finds her annoying and a nuisance as she persists to win his heart.
 Eventually Demetrius does fall in love with Helena due to Oberon and Puck putting the love juice on his eyes.
 The storyline is complex and it shows the difficulties of true love through comedy.
St Helena: a play in twelve scenes is a play by the English author R. C. Sherriff (notable as the author of the First World War drama "Journey's End") and Jeanne de Casalis (who also researched it).
 It deals with the exile of Napoleon I on Saint Helena.
 It premiered at the Old Vic on 4 February 1936 to poor reviews, but was rescued by a letter to "The Times" by Winston Churchill, calling it "a remarkable play" and "a work of art of a very high order", though a West End transfer also proved unsuccessful.
Will Horton is a fictional character from the American soap opera "Days of Our Lives", known for an award-winning coming out story, award-winning performances by actor Chandler Massey, and as one half of US daytime drama's first male gay wedding and marriage.
 The character first appeared on November 16, 1995, as a newborn child.
 His mother Sami Brady (Alison Sweeney) acts as if Austin Reed (Austin Peck) is the father so Austin might marry her, and they call the child Will Reed.
 When Sami later realizes that Will must actually be the son of Lucas Roberts (Bryan Dattilo), she tries to prevent others finding out.
 Two years later the truth comes out, and Will, who is renamed Will Roberts, has a "tumultuous upbringing" due to his parents' ever-changing love lives, and their machinations as they fight each other for custody.
 As a child, Will does everything he can to bring his parents together, so they can be a "real family"; whereas his grandma Kate Roberts (Lauren Koslow) schemes to keep his parents apart.
 In 2007, Lucas, now in love with Sami and angry at Kate's interference, changes his and Will's surname to Horton (after Will's paternal grandfather).
Horton Hears a Who!
 is a 1970 television special based on the Dr. Seuss book of the same name, "Horton Hears a Who!
".
 It was produced and directed by Chuck Jones – who previously produced the Seuss special "How the Grinch Stole Christmas!
" – for MGM Television and first broadcast March 19, 1970 on CBS.
 The special contains songs with lyrics by Seuss and music by Eugene Poddany, who previously wrote songs for Seuss' book, "The Cat in the Hat Song Book".
Seussical is a musical by Lynn Ahrens and Stephen Flaherty based on the stories of Dr. Seuss (mainly "Horton Hears a Who!
", "Horton Hatches the Egg" and "Miss Gertrude McFuzz") that debuted on Broadway in 2000.
 The play's story is a complex amalgamation of many of Seuss's most famous books.
 After a Broadway run, the production spawned two US national tours and a UK tour.
 It has become a beloved classic for schools, communities, and regional theatres.
All's Well That Ends Well is a play by William Shakespeare.
 It is believed to have been written between 1604 and 1605, and was originally published in the "First Folio" in 1623.
Holiday is a 1938 film directed by George Cukor, a remake of the 1930 film of the same name.
 The film is a romantic comedy that tells of a man who has risen from humble beginnings only to be torn between his free-thinking lifestyle and the tradition of his wealthy fiancée's family.
 The movie, adapted by Donald Ogden Stewart and Sidney Buchman from the play by Philip Barry, stars Katharine Hepburn and Cary Grant and features Doris Nolan, Lew Ayres, and Edward Everett Horton.
 Horton reprised his role as Professor Nick Potter from the 1930 version.