Note 461 — BOOK X[399]
Alexander Teixeira de Mattos translation
Bianca Capello, Grand-duchess of Tuscany (circa 1548-1587), was originally an Italian adventuress, the mistress of Francis de' Medici, Grand-duke of Tuscany, whom she married, in 1578, when he became a widower. She was recognised as Grand-duchess in 1579.