What does Kerrigan mean?
Kerrigan \k(e)-rri-gan\ as a name for boys is of Irish and Gaelic derivation, and the name Kerrigan means "black-haired". Kerrigan is a derivative of Kerry (Irish, Gaelic). Seldom used as a given name for boys.
Kerrigan is a rare first name for men but a very popular surname for both adults and children (#6433 out of 88799, Top 7%). (2000 U.S. Census)
Shown below is a comparison of the usage of the boy name Kerrigan and related names. Kerry is the only prominent variation form of Kerrigan (#unlisted) listed in the Top 1000. Adoption of this boy name reached its most widespread during the years 1960-1969 and has become significantly less since, with the version Kerry becoming less trendy. (2014 Birth Statistics)