 Jeanne, Emilie Loew, and Colbert's grandmother, Marie Augustine Loew (1842–1930), were born in the Channel Islands between England and France, thus were already fluent English speakers before coming to the U.S., though French and English were spoken in the family circle.Colbert's brother, Charles Auguste Chauchoin (1898–1971), was also born in the Bailiwick of Jersey.Jeanne held various occupations.