Ó Siocfhradha
Ó SIOCFHRADHA, Ó SIOCHRADHA—II—O Shighrowe, Shughrue, Shegrue, Sugrue, Segrue, Sugrew; 'descendant of Siocfhraidh' (the Norse Sigefrith, victory-peace); an old Kerry surname. The family is said to be a branch of the O'Sullivans.
Alphabetical Index to Irish Surnames