William Marshall

Career overview

Role: Meticulous television and film archivist.
Task: Write a 180-260 word career overview of William Marshall (Acting).
Constraints:
Use ONLY verifiable facts from provided sources.
No invention/guessing of titles, names, dates, etc.
Original, neutral, encyclopedic prose.
Plain text ONLY (no markdown, no asterisks, no headings, no bullet points).
Length: 180-260 words.
Structure: 2-3 short paragraphs.
No preamble or JSON.
[1] William Marshall (TMDB): Actor, Birthday Oct 12, 1917, Death June 8, 1994 (76 years old), Born Chicago, Illinois, USA.
[2] IMDb: Actor (Blacula), trained in Grand Opera, Broadway, and Shakespeare. Films: Lydia Bailey (1952), Something of Value (1957), To Trap a Spy (1964), The Boston Strangler.
[3] TMDB: American actor, director, opera singer. Best known for title role in Blacula and sequel Scream Blacula Scream, and role on Pee-wee's Playhouse. Broadway debut 1944 in Carmen Jones. In 1950, understudied Boris Karloff as Captain H.
[4] Biographies.net: American singer, bandleader, motion picture actor, director, producer. Born Chicago, Illinois. Vocalist for Fred Waring and his band, the "Pennsylvanians". Formed own band in 1937.
[5] William Benedict (Wikiwand): Irrelevant (discusses William Benedict, not William Marshall).
Paragraph 1: Early Career and Training.
William Marshall was an American actor, director, producer, singer, and opera singer born in Chicago, Illinois. He trained in Grand Opera, Broadway, and Shakespeare. His musical career included serving as a vocalist for Fred Waring and his band, the Pennsylvanians, before he formed his own band in 1937. Marshall made his Broadway debut in 1944 in Carmen Jones. In 1950, he understudied Boris Karloff as Captain H.
Paragraph 2: Film and Television.
Marshall's film credits from the 1950s and 1960s include Lydia Bailey (1952), Something of Value (1957), and To Trap a Spy (1964). He is also known for his work in The Boston Strangler. He is best known for his title role in Blacula and its sequel, Scream Blacula Scream. Additionally, he had a role on Pee-wee's Playhouse. Marshall died on June 8, 1994, at the age of 76.
Drafting (Mental Check):
William Marshall was an American actor, director, producer, and opera singer born in Chicago, Illinois. He received training in Grand Opera, Broadway, and Shakespeare. His early career included work as a vocalist for Fred Waring and his band, the Pennsylvanians, and he formed his own band in 1937. Marshall made his Broadway debut in 1944 in the production Carmen Jones. In 1950, he understudied Boris Karloff as Captain H.

His filmography includes roles in Lydia Bailey (1952), Something of Value (1957), and To Trap a Spy (1964), and he is known for appearing in The Boston Strangler. Marshall is most recognized for his title role in Blacula and the sequel Scream Blacula Scream, as well as his role on Pee-wee's Playhouse. He passed away on June 8, 1994, at the age of 76.
Word Count Check:
"William Marshall was an American actor, director, producer, and opera