From Latin 'constantia' meaning steadfastness, firmness, or constancy; a medieval royal name.
Constance comes from the medieval form of Constantia, ultimately from Latin constantia, meaning "constancy," "steadfastness," or "perseverance." It belongs to the long tradition of virtue names, but unlike later English coinages such as Faith or Patience, Constance arrived through medieval Europe already dignified by Latin Christian culture. The Normans brought it to England, and it was borne by noblewomen early on, including a daughter of William the Conqueror.
Its meaning is wonderfully direct: this is a name that praises endurance of character, moral stability, and firmness of purpose. Historically, Constance has moved through several distinct phases of style. In the Middle Ages it had aristocratic weight; in later centuries it became familiar enough to produce the nickname Connie, which gave the formal name a more domestic and affectionate side.
It has been borne by queens, duchesses, actresses, and writers, and in literature it often appears on women meant to project seriousness, gentility, or inner strength. Because of that history, Constance has never quite disappeared, even when it fell out of fashion. Its modern perception has shifted from old-fashioned to quietly elegant, part of the revival of names with substance and historical depth.
Culturally, it carries an unusual balance: Roman root, medieval pedigree, Victorian polish, and a meaning that remains instantly intelligible. Few names wear their moral aspiration as beautifully as Constance.