Kearstyn is a name of American origin, derived from the Irish surname 'O'Ciarathain', which translates to 'descendant of Ciarán'. It is composed of two elements: 'ciar' meaning 'black', and 'án' signifying 'little'. While it is not a traditional Irish given name, Kearstyn has gained popularity in recent years as a unique choice for girls. The name carries a certain charm with its distinctive sound and Irish heritage.
The name Kearstyn experienced a significant peak in popularity around the late 1990s and early 2000s, with over 14 births per year from 1997 to 2003. However, its usage has since declined, with fewer than 10 births recorded annually since 2005.