Meaning and Name Origin
Kierstynn \ki(e)-rsty-nn, kier(s)-tynn\ as a girls' name has the meaning "follower of Christ". Kierstynn is a form of Kirsten (Scandinavian, Latin): variant of Christine. An uncommon birth name for females.
Kierstynn is an uncommon given name for women. Kierstynn is also a rare surname for both adults and children. (2000 U.S. Census)
Below is a charted analysis of the usage of Kierstynn and related names. Kiersten, Kirsten, Kirstie, Kirstin, Kirsty and Kristyn are the prominent alternative forms of Kierstynn (#unlisted). Usage of these girl names was at its most widespread in the year 1991 and has become significantly lower since, with the forms Kiersten, Kirsten, Kirstie, Kirstin and Kristyn becoming somewhat dated. (Top 1000 Baby Names Records, 2014)