Question: Valentino Urbani sang the role of Eustazio at the premiere of what opera that was composed in 171, and was the first Italian language opera written specifically for the London stage?

Context articles: La liberazione di Ruggiero
L'empio punito
Idomeneo
Svegliatevi nel core
Rinaldo (opera)
Pecan Summer
Zenobia e Radamisto
The Italian Language Foundation
Valentino Urbani
Emilio Venturini

La liberazione di Ruggiero dall'isola d'Alcina ("En."
 "The Liberation of Ruggiero from the island of Alcina") is a comic opera in four scenes by Francesca Caccini, first performed 3 February 1625 at the Villa di Poggio Imperiale in Florence, with a libretto by Ferdinando Saracinelli, based on Ludovico Ariosto's "Orlando Furioso".
 It is the first opera written by a woman, and was long considered to be the first Italian opera to be performed outside of Italy.
 It was performed to celebrate a visit from Prince Władysław of Poland during Carnival 1625, and it had a revival in Warsaw in 1628.
 The work was commissioned by Regent Archduchess Maria Maddalena of Austria, wife of Cosimo II de' Medici, for whom Caccini worked.
 "Ruggiero" was printed under the protection of Maria Magdalena in 1625, only five years after the first printed opera in Italy.
 It is the only opera by Francesca Caccini to survive.
L'empio punito is an opera by composer Alessandro Melani.
 Notably the first opera written on the subject of Don Juan, the work uses an Italian language libretto by Giovanni Filippo Apolloni and Filippo Acciaiuoli.
 The opera was commissioned by Marie Mancini for performance during Carnival of 1669.
 The work premiered at the Teatro di Palazzo Colonna in the historic Borgo district of Rome on 17 February 1669.
Idomeneo, re di Creta ossia Ilia e Idamante (Italian for "Idomeneus, King of Crete, or, Ilia and Idamante"; usually referred to simply as Idomeneo, K. 366) is an Italian language opera seria by Wolfgang Amadeus Mozart.
 The libretto was adapted by Giambattista Varesco from a French text by Antoine Danchet, which had been set to music by André Campra as "Idoménée" in 1712.
 Mozart and Varesco were commissioned in 1780 by Karl Theodor, Elector of Bavaria for a court carnival.
 He probably chose the subject, though it might have been Mozart.
 The work premiered on 29 January 1781 at the Cuvilliés Theatre in Munich, Germany.
"Svegliatevi nel core" is an aria taken from Act I, Scene IV of the Italian language opera seria, "Giulio Cesare", by George Frideric Handel.
 The aria is written for the role of “Sesto”, a soprano in trouser role, including during the premiere, who sings it to assure his mother that he will avenge the death of his father, Pompey, who was assassinated by the Egyptians, instructed by Tolomeo (Ptolemy XIII Theos Philopator) to demonstrate the Egyptians' loyalty to Julius Caesar.
 The words were written by Nicola Francesco Haym.
Rinaldo (HWV 7) is an opera by George Frideric Handel, composed in 1711, and was the first Italian language opera written specifically for the London stage.
 The libretto was prepared by Giacomo Rossi from a scenario provided by Aaron Hill, and the work was first performed at the Queen's Theatre in London's Haymarket on 24 February 1711.
 The story of love, war and redemption, set at the time of the First Crusade, is loosely based on Torquato Tasso's epic poem "Gerusalemme liberata" ("Jerusalem Delivered"), and its staging involved many original and vivid effects.
 It was a great success with the public, despite negative reactions from literary critics hostile to the contemporary trend towards Italian entertainment in English theatres.
Pecan Summer is an opera written and composed by the indigenous Australian singer Deborah Cheetham, who also sang in every season.
 It was orchestrated by Jessica Wells.
 It is the first opera written by an indigenous Australian and involving an indigenous cast.
 It is based on the February 1939 Cummeragunja walk-off, in which Cheetham's grandparents were involved.
Zenobia e Radamisto is an opera in 3 acts and nine scenes by composer Giovanni Legrenzi.
 The opera uses an Italian language libretto by Ippolito Bentivoglio (1611-1685).
 The third opera written by Legrenzi, the work premiered on 1 June 1665 at the Teatro Bonacossi in Ferrara in celebration of the marriage of Nicolò Santini and Maria Luisa Bonvisi.
 The opera was subsequently mounted in Brescia (1666), Verona (1667), and Macerata (1669).
The Italian Language Foundation (ILF) was established on July 3, 2008 to promote and support Italian language education in the United States and specifically to reinstate the Advanced Placement program (AP) of the College Board for AP Italian Language and Culture.
Valentino Urbani (born in Udine; "fl."
 1690–1722) was an Italian alto castrato who sang for the composer George Frideric Handel in the 18th century.
 He was known by the stage name Valentini.
 He sang the role of Eustazio at the première of Handel’s "Rinaldo", the role of Silvio at the premiere of "Il pastor fido", and the role of Egeo at the first performance of "Teseo".
 His powers of singing seem to have been limited and by the time of his Handel roles his voice was declining but he is reputed to have been a fine actor.
Emilio Venturini (1878 - 1952) was an Italian operatic lyric tenor known for his portrayal of character roles.
 He made his professional opera debut in 1900 in Italy where he remained for the next several years.
 In 1901 he sang the role of Brighella in Mascagni's "Le maschere" at the Teatro Regio in Turin.
 He made his La Scala debut in 1903 as Froh in Wagner's "Das Rheingold" and sang in the premiere of Umberto Giordano's "Siberia".
 In 1904, he originated the role of Prince Yamadori in Puccini's "Madama Butterfly" at La Scala.
 In 1905, Venturini joined the roster of the Opéra National de Paris.
 In 1907 he moved to London to sing with Royal Opera at Covent Garden.
 In 1910, Venturini became a member of the Chicago Opera Association where he performed roles until the summer of 1917.
 While in Chicago he sang mostly character parts but did sing some major roles like Turiddu in "Cavalleria rusticana", Edgardo in "Lucia di Lammermoor" and the Pinkerton in "Madama Butterfly".
 In 1911 he sang the roles of Cassio in Verdi's "Otello" and Spoletta in Puccini's "Tosca" at the Metropolitan Opera.
 Venturini also returned to Italy for brief periods in 1910, 1911, and 1916 to perform roles with the Teatro Massimo in Palermo.
 In 1921, Venturini joined the roster at La Scala and sang roles with that opera house until 1948.
 He notably originated the roles of Il Tempiere in Boito's "Nerone" in 1924 and Pang in Puccini's "Turandot" in 1926.
 and was the first to record the role of Nereo in Boito's "Mefistofele" in the 1931 La Scala recording.