This name can also be used as a diminutive of Caroline, Carla, Carlotta, Carlene and other similar names. See the comment originally by an anonymous user on Sep/5/2022 https://en.wiktionary.org/wiki/Carly
Carly is also occasionally used as a masculine diminutive for Carl.
― Anonymous User 7/9/2015
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Carly is the English spelling of the Irish surname Carlin(?). There are a significant number of Irish familes born around Strokestown Roscommon with that surname. In fact some are mentioned on the paque at Strokestown House (the 490 missing persons at the time of the famine) The name is male, but is now exclusively feminine. This can be very unfortunate if your mother retained the surname (which mine did) and most people think you have a girls name!
https://en.wikipedia.org/wiki/Karlie_Kloss
https://en.wikipedia.org/wiki/Karlie_Redd
The user submitted name: https://www.behindthename.com/name/karlie/submitted