Meaning and Name Origin
Sessy \s(es)-sy\ as a girls' name is of Latin and Old Welsh derivation, and the meaning of the name Sessy is "blind; sixth". Sessy is a variant of Cecily (Latin, Old Welsh): from the medieval vernacular form of Cecilia. Seldom used as a name for girls.
Sessy has 1 variant: Sissy.
Sessy is an unusual first name for females. Sessy is an equally unusual last name for all people. (2000 U.S. Census)
Shown below is a comparison of the popularity of the girl name Sessy and associated names. The only popular alternative form of Sessy (#unlisted) ranked in the Top 1000 is Cecily. This girl name was at the apex of its popularity in 1990 and is now significantly less popular, with the form Cecily becoming less fashionable. (2014 Birth Statistics)