What does Kerrigan mean?
Kerrigan is a rare first name for men but a very popular surname for both adults and children (#5831 out of 150436, Top 4%). (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 these boy names reached its most widespread during 1960-1969 (usage of 0.823%) and has become significantly less since, with Kerry becoming less trendy. (2014 Birth Statistics)