The name Caitriona is a girl's name of Gaelic, Scottish origin meaning "pure". Caitriona and is often added to lists like Scottish Names for Girls and discussed in our forums with posts like "Best name or combo from previous poster's signature!".
From the experts:
Both Caitriona and Catriona are commonly heard in Scotland and Ireland. The name was brought to Ireland by the Anglo-Normans, and is the source of nicknames Cait, Caitin, Caitlin and Triona. Actress Caitrona Balfe has gained recognition for her role on Outlander. Pronunciation is like the more phonetic Katrina.