[Sidenote: The balance of probability is in favour of 1436.] The date of the birth of Columbus is easy to determine approximately, but hard to determine with precision. In the voluminous discussion upon this subject the extreme limits assigned have been 1430 and 1456, but neither of these extremes is admissible, and our choice really lies somewhere between 1436 and 1446. Among the town archives of Savona is a deed of sale executed August 7, 1473, by the father of Christopher Columbus, and ratified by Christopher and his next brother Giovanni.[408] Both brothers must then have attained their majority, which in the republic of Genoa was fixed at the age of twenty-five. Christopher, therefore, can hardly have been less than seven and twenty, so that the latest probable date for his birth is 1446, and this is the date accepted by Munoz, Major, Harrisse, and Avezac. There is no documentary proof, however, to prevent our taking an earlier date; and the curate of Los Palacios--strong authority on such a point--says expressly that at the time of his death, in 1506, Columbus was "in a good old age, seventy years a little more or less."[409] Upon this statement Navarrete and Humboldt have accepted 1436 as the probable date of birth.[410] The most plausible objection to this is a statement made by Columbus himself in a letter to Ferdinand and Isabella, written in 1501. In this letter, as first given in the biography by his son, Columbus says that he was of "very tender age" when he began to sail the seas, an occupation which he has kept up until the present moment; and in the next sentence but one he adds that "now for forty years I have been in this business and have gone to every place where there is any navigation up to the present time."[411] The expression "very tender age" agrees with Ferdinand's statement that his father was fourteen years old when he first took to the sea.[412] Since 1446 + 14-40 = 1500, it is argued that Columbus was probably born about 1446; some sticklers for extreme precision say 1447. But now there were eight years spent by Columbus in Spain, from 1484 to 1492, without any voyages at all; they were years, as he forcibly says, "dragged out in disputations."[413] Did he mean to include those eight years in his forty spent upon the sea? Navarrete thinks he did not. When he wrote under excitement, as in this letter, his language was apt to be loose, and it is fair to construe it according to the general probabilities of the case. This addition of eight years brings his statement substantially into harmony with that of Bernaldez, which it really will not do to set aside lightly. Moreover, in the original text of the letter, since published by Navarrete, Columbus appears to say, "now for _more than_ forty years," so that the agreement with Bernaldez becomes practically complete.[414] The good curate spoke from direct personal acquaintance, and his phrases "seventy years" and "a good old age" are borne out by the royal decree