Washington Irving was unaware of the existence of this son Giovanni Pellegrino, for he states that "Christopher Columbus was the eldest of three brothers only--Bartholomew and Giacomo, or James (written Diego in Spanish)." Giovanni Pellegrino was the second brother, and died unmarried in 1489. We have more than this proof of his existence. In another document he is named together with his three brothers,--Christopher, Bartholomew, and Giacomo. In 1501, ten years after his death, and some time after that of his father, a man named Corasso Cuneo summoned the sons of Domenico Colombo before the tribunals of Savona for non-payment of the price due to him for lands purchased by their father Domenico many years before his decease. In this curious document we read the names of Christopher and James--"Christophorem et Jacobum, fratres de Columbi, filiis et heredes quondam Dominici eorum patris." In the next register concerning this affair, and dated the same month and year, Bartholomew is mentioned--"Cristoferi, Bartolomei et Jacobi de Columbis, quondam Domenici et ipsius heredem." There is no mention of Bianchinetta, the only sister of the illustrious navigator. She, being a married woman, was not, according to Genoese law, entitled to inherit from her father. Here, then, we have the most positive contemporary evidence that Domenico Colombo was the father of four sons, respectively named Christopher, Giovanni Pellegrino or Pilgrim (a name sometimes found in old English registers), Bartolomeo or Bartholomew, and Giacomo or Diego,--and, therefore, the father of Christopher Columbus, Discoverer of the New World, who, as everybody knows, had two brothers, companions in his travels, named Bartholomew and Giacomo (or Diego). We learn that, according to documents far too numerous to be quoted here, the said Domenico was a taxpaying resident in the Via di Sant Andrea, in the city of Genoa, between the years 1435 and 1470. Another and most important paper, recently discovered by the Marquis Staglieno in the Atti Notarilli of the city of Genoa, declares Christopher Columbus to be nineteen years old in 1470. He was born then, we may presume, in October 1451, during the time of his father's residence in the house now officially declared his birthplace, and situated hard by the noble old Gate of Sant Andrea.