Origin of the name Kiersten: A cognate of Christine, which is derived from the Latin Christiāna, which is from christiānus, a derivative of the Greek christianos (a Christian, a follower of Christ).
Danish Meaning: The name Kirsten is a Danish baby name. In Danish the meaning of the name Kirsten is: Christian.
Kirsty (or sometimes Kirstie) is a feminine given name. It is a Scottish diminutive of Christine in English-speaking countries and is also linked to Kirsten — the Scandinavian version of Christine.
MEANING: This name derives from the Latin “Christianus”, meaning "Christian, follower of Christ". (The term “Christ” was applied to Jesus by early Greek-speaking Christians). ... 1) Saint Christina of Persia also Martyr Christina of Persia is venerated as a Christian martyr of the 6th century.