William Morgan Sheppard
(died 2019 aged 86) would be 91 - 2 credits, including Canton Delaware
in The Wedding of River Song
William Morgan Sheppard was born in London to an Anglo-Irish family. Educated in Ireland he graduated from the Royal Academy of Dramatic Art 1956-58 before spending 12 years as Associate Artist with the Royal Shakespeare Company.
He appeared on Broadway in 1966 with Marat/Sade and later in 1975 with Sherlock Holmes. He won the Los Angeles Drama Critics Circle Award for The Homecoming in 1995, at the Matrix Theatre.
Sheppard appeared in several episodes of different series of Star Trek, notably "The Schizoid Man", as well as the feature film Star Trek VI: The Undiscovered Country. He also had roles as Blank Reg on Max Headroom and Confederate General Isaac Trimble in the filmsGettysburg and Gods and Generals.
He has appeared in two roles on the science fiction series Babylon 5 and played a computer hologram for an A.I. program during the first and second season of seaQuest DSV. He appeared in two episodes of MacGyver as well as appearing in the show Minder.
He appeared in the 1978 TV-film The Nativity and starred alongside John Terry in the 1980 fantasy film Hawk the Slayer. He appeared in the 1992 comedy film There Goes the Neighborhood. He appeared in the 1988 comedy horror film Elvira, Mistress of the Dark as Elvira's Great-Uncle Vincent Talbot who was an evil warlock. Sheppard was cast in the 1996 adventure game Zork Nemesis and in 2000 he voiced the character Ignatius Cheese in the game Escape from Monkey Island. He played the role of Captain Archibald Witwicky in the 2007 live action film Transformers.
In the opening episode of series six of Doctor Who, "The Impossible Astronaut" he plays an older version of the character Canton Everett Delaware III while his son Mark Sheppard portrays the younger version.