This name derives from the Middle Irish Gaelic genitive form “Cathasaig”, meaning “vigilant, watchful”, from the surname “Ó Cathasaig”. In turn the name means “descendent of Cathasach. The English version “Casey” was the 326th most popular name for boys born in the United States in 2007 and the 458th most popular name for girls. It ranked among the top 200 names for both sexes in the 1990s.
ENGLISH
