Are both Claudio Monteverdi and Gaetano Donizetti Italian composers?
yes
Gaetano Donizetti
Domenico Gaetano Maria Donizetti (] ; 29 November 1797 – 8 April 1848) was an Italian composer.
 Along with Gioachino Rossini and Vincenzo Bellini, Donizetti was a leading composer of the "bel canto" opera style during the first half of the nineteenth century.
 Donizetti's close association with the bel canto style was undoubtedly an influence on other composers such as Giuseppe Verdi (1813–1901).
Claudio Monteverdi
Claudio Giovanni Antonio Monteverdi (] ; 15 May 1567 (baptized) – 29 November 1643) was an Italian composer, string player and choirmaster.
 A composer of both secular and sacred music, and a pioneer in the development of opera, he is considered a crucial transitional figure between the Renaissance and the Baroque periods of music history.
Giacomo Benvenuti
Giacomo Benvenuti (16 March 1885, Toscolano — 20 January 1943, Barbarano-Salò) was an Italian composer and musicologist.
 He was the son of organist Cristoforo Benvenuti and studied at the Liceo Musicale in Bologna under Luigi Torchi (musicology) and Marco Enrico Bossi (organ).
 In 1919 his collection of songs for voice and piano accompaniment, "Canti a una voce : con accompagnamento di pianoforte", was published in Bologna.
 In 1922 he published a collection of 17th-century art songs entitled "35 Arie di vari autori del secolo XVII".
 Composer Samuel Barber studied the works of Giulio Caccini, Andrea Falconieri, and other early Italian composers under his tutelage in Milan in 1933-1934.
 For the Teatro dell'Opera di Roma he adapted Claudio Monteverdi's "L'Orfeo" for a production which premiered on 27 December 1934.
 The adaptation was later used for the first recording of "L'Orfeo" in 1939, which included a performance by the orchestra of La Scala Milan under conductor Ferrucio Calusio. Eugenio Cavallini
Eugenio Cavallini (16 June 1806 — 11 April 1881) was an Italian conductor, composer, violinist, and violist.
 In 1833 he became first violinist of the orchestra at La Scala, a post he held through 1855.
 He also served as a conductor at La Scala, notably leading the world premieres of Gaetano Donizetti's "Lucrezia Borgia" (1833), Donizetti's "Gemma di Vergy" (1834), Donizetti's "Maria Stuarda" (1835), Saverio Mercadante's "Il giuramento" (1837), Mercadante's "Il bravo" (1839), Giuseppe Verdi's "Oberto" (1839), Verdi's "Un giorno di regno" (1840), Donizetti's "Maria Padilla" (1841), Verdi's "Nabucco" (1842), Verdi's "I Lombardi alla prima crociata" (1843), Verdi's "Giovanna d'Arco" (1845), Federico Ricci's "Estella di Murcia" (1846), and Domenico Ronzani's "Salvator Rosa" (1854). Gaetano Rossi
Gaetano Rossi (18 May 1774 – 25 January 1855) was an Italian opera librettist for several of the well-known "bel canto"-era composers including Gioachino Rossini, Gaetano Donizetti, and Saverio Mercadante in Italy and Giacomo Meyerbeer in one of his early Italian successes.
 Other composers with whom he worked included Simon Mayr, a composer and Donizetti's teacher, as well as the prolific Giovanni Pacini. Stattkus-Verzeichnis
The Stattkus-Verzeichnis (SV) is a catalogue of the musical compositions of the Italian composer Claudio Monteverdi.
 The catalogue was published in 1985 by Manfred H. Stattkus ("Claudio Monteverdi: Verzeichnis der erhaltenen Werke").
 A free, basic second edition of the catalogue is available online. Domenico Reina
Domenico Reina (July 14, 1796 - July 29, 1843) was a Swiss bel canto tenor, notable for creating roles in the operas of Vincenzo Bellini, Gaetano Donizetti, Saverio Mercadante, and other Italian composers. Opera Rara
Opera Rara is a British non-profit recording company, founded in the early 1970s by American Patric Schmid and Englishman Don White to promote concerts of rare and/or forgotten operas by "bel canto" era composers such as Italian composers Gaetano Donizetti, Giovanni Pacini, Saverio Mercadante, and Federico Ricci, as well as French composers of the 1830s forward such as Giacomo Meyerbeer. Casa Ricordi
Casa Ricordi is a publisher of primarily classical music and opera.
 Its classical repertoire represents one of the important sources in the world through its publishing of the work of the major 19th-century Italian composers such as Gioachino Rossini, Gaetano Donizetti, Vincenzo Bellini, Giuseppe Verdi, and, later in the century, Giacomo Puccini, composers with whom one or another of the Ricordi family came into close contact. John Whenham
John Whenham is an English musicologist and academic who specializes in early Italian baroque music.
 He earned both a Bachelor of Music and a Master of Music from the University of Nottingham, and a Doctor of Philosophy from the University of Oxford.
 He is a leading expert on the life and works of Claudio Monteverdi, and is the author of the books "Duet and Dialogue in the Age of Monteverdi" (Ann Arbor, Michigan: University Microfilms International, 1982) "Monteverdi, 'Orfeo' " (London: Cambridge University Press, 1986), "Monteverdi, Vespers (1610)" (Cambridge University Press, 1997), and "The Cambridge Companion to Monteverdi" (with Richard Wistreich, Cambridge University Press, 2007).
 For five years he was co-editor of the journal "Music & Letters".
 He currently serves on the board of the Birmingham Early Music Festival and is head of the music history department at the University of Birmingham.