Meaning and name origin
Colum \c(o)-lum\ as a boy's name is of Irish and Gaelic origin. Short form of Latin Columba (see Calum) or Columban. Used in reference to Saint Columba (sixth century) of Ireland, who founded the monastery of Iona. Actor from "Star Trek: Deep Space Nine" Colm Meaney; actor Colm Wilkinson.
For more information, see also the related boy name Culver.
Colum is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).