Short answers, pulled from the story.
Giacomo Puccini was born on the 22nd of December 1858 in Lucca, a city in the Grand Duchy of Tuscany. He was born into a family that had served as the maestro di cappella of the Cattedrale di San Martino for 124 years.
Giacomo Puccini composed major operas including La bohème which premiered on the 1st of February 1896, Tosca which premiered on the 14th of January 1900, and Madama Butterfly which premiered at La Scala on the 17th of February 1904. His final opera Turandot was left unfinished at his death in November 1924 and completed by Franco Alfano.
Giacomo Puccini died in Brussels on the 29th of November 1924 from complications after experimental radiation therapy for throat cancer. Uncontrolled bleeding led to a heart attack the day after surgery.
Giacomo Puccini's wife was Elvira Gemignani whom he married in early 1904 after her husband Narciso Gemignani died on the 26th of February 1903. Their marriage was troubled by infidelity as Puccini had frequent affairs with well-known singers such as Maria Jeritza and Emmy Destinn.
Giacomo Puccini was seriously injured in a car crash on the 25th of February 1903 during a nighttime journey from Lucca to Torre del Lago. He suffered a severe fracture of his right leg and a portion of the car pressing down on his chest.