Definition of "Isabella"

Can you so stead me, / As bring me to the sight of Isabella, / A novice of this place, and the fair sister / To her unhappy brother Claudio?

c. 1603–1604 (date written), William Shakespeare, “Measure for Measure”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, (please specify the act number in uppercase Roman numerals, and the scene number in lowercase Roman numerals)

A contemporary, and usually very accurate chronicler, Bartholomew of Norwich, tells us that the queen called her infant by the barbarous name of Walkiniana; others again call her Isabella; but, in the wardrobe accounts, and all other state records, she is invariably designated Elizabeth.

1857 Mary Anne Everett Green, Lives of the Princesses of England, Vol. 3, page 2 ("Elizabeth, eighth daughter of Edward I")