Question: Were Noël Coward and Mario Puzo of the same nationality?

Context articles: Noël Coward
Noël Coward Society
Fools Die
I Went to a Marvellous Party
London Calling! (musical)
Mario Puzo
Graham Payn
Noël Coward at Las Vegas
Words and Music (musical)
Twentieth-Century Blues: The Songs of Noël Coward

Sir Noël Peirce Coward (16 December 189926 March 1973) was an English playwright, composer, director, actor and singer, known for his wit, flamboyance, and what "Time" magazine called "a sense of personal style, a combination of cheek and chic, pose and poise".
The Noël Coward Society is an international society founded with the agreement of Coward's literary agent and Estate to celebrate the life and work of Sir Noël Coward.
Fools Die is a 1978 novel by Italian American author Mario Puzo.
 Played out in the worlds of gambling, publishing and the film industry, Merlyn and his brother Artie obey their own code of honor in the ferment of contemporary America, where law and organized crime are one and the same.
 Set in New York, Hollywood, and Las Vegas, Mario Puzo considered "Fools Die" to be his personal favorite.
 The paperback rights to the book were sold in 1978 by the publisher, G. P. Putnam's Sons, to New American Library for a then record $2.55 million.
"I Went to a Marvellous Party" (sometimes known as "I've Been to a Marvellous Party") is a song with words and music by Noël Coward, written in 1938 and included in the revue, "Set to Music".
 Although a melody exists, the text is most often recited over a piano accompaniment.
 Out of Noël Coward's approximately 300 songs, this piece is one of his most popular, ranking among the top 30 in royalty potential.
London Calling!
 was a musical revue, produced by André Charlot with music and lyrics by Noël Coward, which opened at London's Duke of York's Theatre on 4 September 1923.
 It is famous for being Noël Coward's first publicly produced musical work and for the use of a 3-D stereoscopic shadowgraph as part of its opening act.
 The revue's song "Parisian Pierrot", sung by Gertrude Lawrence, was Coward's first big hit and became one of his signature tunes.
Mario Gianluigi Puzo ( ; ] ; October 15, 1920 – July 2, 1999) was an American author, screenwriter and journalist of Italian descent.
 He is known for his crime novels about the Mafia, most notably "The Godfather" (1969), which he later co-adapted into a three-part film saga directed by Francis Ford Coppola.
 He received the Academy Award for Best Adapted Screenplay for the first film in 1972 and "Part II" in 1974.
 Puzo also wrote the original screenplay for the 1978 "Superman" film.
 His last novel, "The Family", was released posthumously in 2001.
Graham Payn (25 April 1918 – 4 November 2005) was a South African-born English actor and singer, also known for being the life partner of the playwright Noël Coward.
 Beginning as a boy soprano, Payn later made a career as a singer and actor in the works of Coward and others.
 After Coward's death, Payn ran the Coward estate for 22 years.
Noël Coward at Las Vegas is a 1955 live album by Noël Coward.
Words and Music is a musical revue with sketches, music, lyrics and direction by Noël Coward.
 The revue introduced the song "Mad About the Boy", which, according to The Noël Coward Society's website, is Coward's most popular song.
 The critics praised the show's sharp satire and verbal cleverness.
Twentieth-Century Blues: The Songs of Noël Coward is a 1998 Noël Coward tribute album curated by Neil Tennant, who invited prominent artists of the day to reinterpret Noël Coward’s songs for the late 20th century.