Isabella descends from the Hebrew Elisheba by way of Spanish and Italian forms, and its traditional meaning is often given as "God is my oath" or "devoted to God." The name has long been associated with gracious, steadfast devotion rather than solemn obligation, carrying a warmth that softened over centuries of use across languages.
While the Moon shall be South descending in Scorpio or Pisces, begin not then to build; for a fabrick then erected quickly comes to ruin. - William Lilly (1602.-1681.)