The Magnifico Giuliano de’ Medici left Rome on the 9th of January 1515, just at daybreak, to take a wife in Savoy; and on the same day fell the death of the king of France.
[Footnote: Giuliano de Medici, brother to Pope Leo X.; see note to Nos. 1351-1353. In February, 1515, he was married to Filiberta, daughter of Filippo, Duke of Savoy, and aunt to Francis I, Louis XII’s successor on the throne of France. Louis XII died on Jan. 1st, and not on Jan. 9th as is here stated.— This addition is written in paler ink and evidently at a later date.]
Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.