Meaning & Origin
Ysabeau is a girl's baby name of Old French origin, a medieval French form of Isabella or Elizabeth — from the Hebrew meaning 'God is my oath' or 'consecrated to God.' Ysabeau was the name of Isabelle of France, wife of Edward II of England, known as the "She-Wolf of France."
Ysabeau has extraordinary medieval aristocratic resonance — this spelling was the form used in French royal and noble circles in the 13th and 14th centuries. It carries the weight of crusader queens and medieval court intrigue, a name that sounds like it was spoken in candlelit stone chambers.