The answer to the question: Whose palace was El Greco obliged to leave? is inside the article: By the time El Greco arrived in Rome, Michelangelo and Raphael were dead, but their example continued to be paramount, and somewhat overwhelming for young painters. El Greco was determined to make his own mark in Rome defending his personal artistic views, ideas and style. He singled out Correggio and Parmigianino for particular praise, but he did not hesitate to dismiss Michelangelo's Last Judgment in the Sistine Chapel; he extended an offer to Pope Pius V to paint over the whole work in accord with the new and stricter Catholic thinking. When he was later asked what he thought about Michelangelo, El Greco replied that "he was a good man, but he did not know how to paint". And thus we are confronted by a paradox: El Greco is said to have reacted most strongly or even condemned Michelangelo, but found it impossible to withstand his influence. Michelangelo's influence can be seen in later El Greco works such as the Allegory of the Holy League. By painting portraits of Michelangelo, Titian, Clovio and, presumably, Raphael in one of his works (The Purification of the Temple), El Greco not only expressed his gratitude but also advanced the claim to rival these masters. As his own commentaries indicate, El Greco viewed Titian, Michelangelo and Raphael as models to emulate. In his 17th century Chronicles, Giulio Mancini included El Greco among the painters who had initiated, in various ways, a re-evaluation of Michelangelo's teachings.Because of his unconventional artistic beliefs (such as his dismissal of Michelangelo's technique) and personality, El Greco soon acquired enemies in Rome. Architect and writer Pirro Ligorio called him a "foolish foreigner", and newly discovered archival material reveals a skirmish with Farnese, who obliged the young artist to leave his palace. On 6 July 1572, El Greco officially complained about this event. A few months later, on 18 September 1572, he paid his dues to the Guild of Saint Luke in Rome as a miniature painter. At the end of that year, El Greco opened his own workshop and..., can you guess it ?
Answer:
Farnese