Cub or small companion
Derived from the Irish surname Ó Cuileáin, it is a diminutive form of the Gaelic word for 'cub' or 'whelp.' It historically suggests a sense of youthful energy or a loyal companion.
Less common today
Quillan isn't in the latest US Top 1000. It last peaked at #4,190 in 1991.
US births per 5-year period, 1990–present (SSA data).
Professional soccer goalkeeper
