Caoilainn is a beautiful and unique name for a baby girl. It originates from Ireland and is derived from the Irish language. The name is pronounced as "KEE-lin" (/kiːlɪn/), and it has variations such as Caoilinn. Despite its rarity, Caoilainn has gained some popularity in recent years in the United States, with occurrences ranging from 5 to 15 newborns each year since 2004. This name carries a sense of mystique and charm, making it an intriguing choice for parents seeking something distinctive for their daughter.