Joan
来自Big Physics
wiktionary
From Latin Johanna.
etymonline
Joan
fem. proper name, Middle English Joan, Jone, variants of Jean, Jane, from Medieval Latin Joanna, fem. of Late Latin Joannes (see John). Often 17c.-18c. used as a generic name for a female rustic, or with Darby as the characteristic names of an old, happily married couple (1735). Among U.S. births, a top 10 name for girls born between 1930 and 1937.