Short answers, pulled from the story.
Tintoretto was a Venetian Renaissance painter born Jacopo Robusti in Venice in 1518 and died on the 31st of May 1594. He is known for his muscular figures, dramatic use of perspective, bold brushwork, and extraordinary prolificacy, producing more paintings for the Venetian state than any of his contemporaries.
The name Tintoretto comes from his father Battista's occupation as a cloth dyer. Tintore in Italian and tintor in Venetian both mean dyer, so the son became Tintoretto, meaning "little dyer" or "dyer's boy."
According to biographer Carlo Ridolfi writing in 1642, Titian dismissed Tintoretto after only a few days out of jealousy at so promising a student. Biographer Marco Boschini, writing in 1660, attributed the dismissal to a personality clash. The relationship between the two artists remained rancorous afterward, with Titian actively disparaging Tintoretto throughout his career.
In 1564, when four finalists including Tintoretto, Federico Zuccaro, Giuseppe Salviati, and Paolo Veronese were asked to submit preparatory sketches, Tintoretto instead produced a full-sized painting, secretly installed it on the ceiling, and then presented it as a gift on the day of the competition. A foundation bylaw prohibited the rejection of any gift, so the commission was his.
The Paradise, painted for the Doge's Palace in Venice, measures 9.1 by 22.6 metres and is reputed to be the largest painting ever executed on canvas. The commission was originally awarded to Paolo Veronese and Francesco Bassano, but after Veronese died in 1588, it was reassigned to Tintoretto, who worked on it at the Scuola vecchia della Misericordia before having it moved to the Doge's Palace for completion.
Marietta Robusti was Tintoretto's daughter from before his marriage to Faustina de Vescovi, her mother's identity unrecorded. Trained as an artist by her father, she became a skilled portrait painter as well as a musician, vocalist, and instrumentalist. She died in 1590 at the age of thirty, and Tintoretto was buried beside her in the church of the Madonna dell'Orto.