1. O’Sullivans the world over gather in Cork to break world record  The Journal
  2. Sullivan clan gathering in Cork breaks Guinness World Record  RTE.ie
  3. O’Sullivans gathering in Cork aims to break record for most people with same surname in one place  The Irish Times
  4. Thousands of Sullivans / O’Sullivans descending on West Cork for world record attempt  IrishCentral
  5. Watch: World record broken as over 1,800 O’Sullivans gather in West Cork  Cork Beo