The following biographical information from Compton's Encyclopedia Online.
Italian painters of the 18th century specialized in extravagant scenes, seemingly seeking to outdo one another in the vivid use of color and imaginative treatment of subject matter. The most successful of these artists was Giovanni Battista Tiepolo, who excelled in fresco decorations of church and palace interiors. His work is notable for its inventiveness, draftsmanship, and breathtaking color. He was the last of the great Venetian painters.
Born in Venice on March 5, 1696, Tiepolo was the son of a merchant-ship captain. He studied art first with Gregorio Lazzarini and received his first major commission at the age of 19. He was strongly influenced by the work of Paolo Veronese, a Venetian artist of the 16th century.
Tiepolo painted frescoes in Milan and other Italian cities, and from 1750 to 1753 he decorated the archbishop's palace in Würzburg, Bavaria. Upon returning to Venice he was named the first director of the painting academy there. In 1761 King Charles III of Spain commissioned him to do frescoes in the royal palace at Madrid, where he was assisted by his sons, Giovanni Domenico and Lorenzo.
Among Tiepolo's most admired paintings is 'The Banquet of Anthony and Cleopatra', scenes from the life of Cleopatra that he painted on the walls of the Palazzo Labia in Venice before 1750. Many of his oils are to be found in European and American museums. Tiepolo also did a large number of etchings and many sketches and drawings for collectors of his time. Tiepolo died on March 27, 1770, while decorating the walls of a church in Madrid.