Constance \c(o)-nstan-ce, con-sta-nce\ as a girl's name is pronounced KAHN-stans. It is of Latin origin, and the meaning of Constance is "constancy, steadfastness". Medieval form of Constantia used often in the early Christian and medieval eras, then by the Puritans (usually as Constant or Constancy). This was a popular name among the Normans, and was borne by the formidable Constance of Sicily (12th century), wife of the Emperor Henry VI. Singer Connie Francis.
Constance has 24 variant forms: Con, Conetta, Connee, Conney, Conni, Connie, Conny, Constancia, Constancy, Constanta, Constantia, Constantija, Constantina, Constantine, Constantya, Constanz, Constanza, Konstance, Konstantija, Konstantina, Konstanze, Kosta, Kostatina and Tina.
For more information, see also the related name Verity.