Yvonne

French feminine form of /Yvon/. It has been regularly used in the English-speaking world since the late 19th century.

Medieval diminutive of /Yves/

Medieval French form of /Ivo/. This was the name of two French saints: an 11th-century bishop of Chartres and a 13th-century parish priest and lawyer, also known as Ivo of Kermartin, the patron saint of Brittany.

Germanic name, originally a short form of names beginning with the element iwa meaning "yew". Alternative theories suggest that it may in fact be derived from a cognate Celtic element. This was the name of saints (who are also commonly known as Saint Yves or Ives), hailing from Cornwall, France, and Brittany.