I love this name, it's nice sounding and ages well. I'm using this name as a royal prince in one of my stories. I first heard this name because Skarloey on Thomas and Friends is called this in the French version of Thomas and Friends (Thomas Le Petit Train).
Pronounced "bar-na-bay." The spelling and pronunciation are gone over pretty thoroughly in the song "Barnabé" (music by Jean Manse, lyrics by R. Dumas).
Used in Brazil: https://www.ibge.gov.br/censo2010/apps/nomes/#/search/response/890