Ó hÁdhmaill
Ó hÁDHMAILL—I—O Hammell, O'Hamill, Hamill, Hamell, Hammill, Hammell; 'descendant of Ádhmall' (quick, ready, active); also written Ó hÁghmaill; the name of a branch of the Cinel Eoghain, still numerous in Ulster.
Alphabetical Index to Irish Surnames