linguistic:translation
Early life

Giulio Mazzarino was born on 14 July 1602 in Pescina in the Abruzzo province of Italy, about one hundred twenty kilometers from Rome. His parents were residents of Rome, spending the summer in Pescina to escape the summer heat. His father, Pietro Mazzarino (1576–1654), had moved to Rome from Sicily in 1590 to become a chamberlain in the family of Filippo I Colonna, the Grand Constable of Naples. His father became a citizen of Rome in 1608. His mother Ortensia Bufalini (1575–1644) was a native of Rome, from the Bufalini family of nobility whose origins were in Città di Castello in Umbria. The family had moved to Rome in the Middle Ages. She was the goddaughter of Filippo I Colonna, her husband's employer. Giulio was the eldest of six children, two boys and four girls.

Through the influence of the Colonnas, Giulio was admitted at the age of seven to the Jesuit College in Rome, the most respected school in the city. Though he declined to join their order, he excelled in his studies. In 1618, at the age of sixteen, he gave a public lecture on theories explaining Halley's comet, which appeared in that year. He also excelled in theatrics; he was chosen to play the part of the newly sainted Ignatius of Loyola in a religious pageant. He also acquired the habit of gambling at cards, and was frequently in debt. A particular favourite game of his was a variant of Hoc named after him: Hoc Mazarin.

When he was twenty his father decided to send him away from the bad influences of Rome. Giulio accompanied Girolamo Colonna, one of the sons of Filippo I Colonna, who was eighteen, to the Complutense University of Madrid (then located in Alcalá de Henares) in Spain. He studied law with Girolamo during the daytime and in the evenings continued to gamble and again was in debt. A notary who had advanced some cash to cover gaming debts urged the charming and personable young Mazarino to take his daughter as bride, with a substantial dowry, and Giulio accepted. Girolamo Colonna wrote urgently to his father in Rome, and Giulio was ordered to return immediately to Rome, without his fiancée.