Question: What English actor performed in a show in which a family was transformed into the first vampires?

Context paragraphs:
John Ward (actor): John Ward (24 June 1704 – 30 October 1773) was an English actor and theatre manager.  The founder of the Warwickshire Company of Comedians – a Birmingham-based theatre company who toured throughout the West Midlands and into Wales during the mid to late eighteenth century – he was the first of the Kemble family theatrical dynasty, whose most notable member was his granddaughter Sarah Siddons.  Ward was the first recorded performer of a Shakespearian play in Stratford-upon-Avon, and is also notable as the author of the two earliest surviving prompt books of Shakespeare's "Hamlet", which reveal how the play was performed in eighteenth century England and also throw light on earlier practice.

Bother! The Brain of Pooh: Bother!  The Brain of Pooh is a one-man show created and performed by the English actor Peter Dennis with selections from the works about Winnie-the-Pooh by A. A. Milne.  It premiered on October 14, 1976 at the ADC Theatre, Cambridge University, and premiered in America at the Lee Strasberg Theatre Institute in December 1986.  The show received eight Critics' Choice Awards, the LA Weekly Theater Award, and the Drama-Logue Award.  "Bother!"  has been performed at over eighty major venues throughout the United Kingdom and the United States of America.

Seraph of the End: Seraph of the End (Japanese: 終わりのセラフ , Hepburn: Owari no Serafu ) (also known as Seraph of the End: Vampire Reign) is a Japanese dark fantasy manga series written by Takaya Kagami and illustrated by Yamato Yamamoto with storyboards by Daisuke Furuya.  It is published by Shueisha on "Jump SQ" and in English by Viz Media on "Weekly Shonen Jump".  The series is set in a world that allegedly comes to an end at the hands of a "human-made" virus, ravaging the global populace and leaving only children under the age of thirteen untouched.  It is at this time that vampires emerge from the recesses of the earth, likely followed by age-old horrors of the dark thought only to be myth.  A young man named Yūichirō Hyakuya joins a vampire extermination unit to avenge the deaths of his orphaned family and reclaim his best friend Mikaela Hyakuya from the vampires.  An anime adaptation by Wit Studio was announced on August 28, 2014.  The first part of the anime premiered in Japan on April 4, 2015 and ended on June 20, 2015.  The second part of the anime began on October 10, 2015 and finished on December 26, 2015.  A series of light novels focused on Yu's superior, Guren Ichinose, has been written by Kagami and illustrated by Yamamoto.

Stage 13: Stage 13, is a 30-minute American anthology television series produced and directed and hosted by Wyllis Cooper.  Ten episodes aired on CBS in 1950.  Featured actors included Leslie Nielsen.  Actor Dennis Patrick played one of the first vampires on TV, in an episode of "Stage 13".

Joseph Morgan (actor): Joseph Morgan (born Joseph Martin; 16 May 1981) is an English actor and director.  He is best known for his role as Klaus Mikaelson in The CW show "The Vampire Diaries" and its spin-off "The Originals".

La Commedia Del Sangue: Vampyr Theatre: La Commedia del Sangue: Vampyr Theatre (1992–1997) was a series of plays on the theme of vampires, first performed in New York City.  It was started by playwright Tony Sokol as an extension of his 1986 show "I was Thirsty and You Drowned Me," a vampire ritual performance piece Sokol performed at the Anarchist's Switchboard, Centerfold and other clubs.  The first Vampyr Theatre performance was at Le Bar Bat in May 1992.  Sokol had placed ads in the back pages of New York City newspapers asking, "Are you a vampire?"  eventually interviewing hundreds of self-professed vampires.  These interviews became the framework for the 13 plays he wrote for La Commedia del Sangue.

Original Vampires (The Vampire Diaries): The Original vampires, in the universe of "The Vampire Diaries" and "The Originals", are a family of vampires from which all current vampires descend, as well as being the most powerful and indestructible of their kind.  In Autumn 1001 AD, after the death of her youngest son Henrik at the hands of werewolves, the powerful witch Esther performed an occult blood ritual in order to protect her five remaining children—(Finn, Elijah, Niklaus, Kol, and Rebekah)—and her husband, Mikael.  The ritual transformed her family into the first vampires.

Bill Cashmore: Bill Cashmore (born 1961) is an English actor, playwright, director and co-founder of Actors in Industry.  Bill started his acting career in the Cambridge Footlights and went on to have roles in "The Bill", "Casualty", "All Creatures Great and Small", "Fist of Fun" (playing The Man, the Bootleg Bootleg George Harrison, and a particularly memorable turn as The Piemaster), The News Revue and The Day Today.  Bill was a writer and performer for 'Gimme 5', the live ITV children's programme.  He has written several plays with Andy Powrie, including 'Trip of A Lifetime', published by Samuel French, which has been performed around the world.  He has also written and performed a one-man show called "An Everyday Actor" about his experiences in the acting profession.  Bill's play 'Daughter' won best play at the 2016 Ink Festival and transferred to the Pleasance theatre London.  Bill is also a travel writer having written for the Sunday Telegraph and the Spectator.

Philip Tonge: Philip Asheton Tonge (26 April 1897 – 28 January 1959) was an English actor.  Born into a theatrical family, he was a child actor, making his stage debut at the age of five.  Among the stars with whom he performed while he was a boy were Henry Irving, Herbert Beerbohm Tree, Ellen Terry and Johnston Forbes-Robertson.  His colleagues as child actors included Hermione Gingold, Mary Glynne, Esmé Wynne-Tyson and Noël Coward.

Lord Ruthven (vampire): Lord Ruthven is a fictional character.  First appearing in print in 1816, he was one of the first vampires in English literature.

Supporting paragraphs: Joseph Morgan (actor) Original Vampires (The Vampire Diaries)
Answer: Joseph Morgan