Kiersta is of Scottish origin, derived from the Gaelic 'Ciarist', which means 'dark'. It is a unique, feminine given name that was once popular among the Scottish nobility. Historically, it has been spelled in various ways, including Kirsty and Kirstie, but Kiersta offers a distinctive and modern alternative.
"Kiersta experienced a dip in popularity after its peak in 1993, with only five births each in 1994 and 2004, before rebounding to six births in 2005."