The O’Sullivan Clan is calling all its members in Australia and worldwide to converge on the Beara Peninsula in West Cork, Ireland from 30 May to 2 June 2026, in an ambitious attempt to set a new Guinness World Record for the largest gathering of people sharing the same surname. 

Organised by the O’Sullivan Clan in counties Cork and Kerry, the event aims to surpass the current record held by the Gallagher Clan of County Donegal, which saw 1,488 Gallaghers come together in 2007. 

The gathering will be hosted by Kelly Sullivan, the Chieftain of the O’Sullivan Clan, who was ceremoniously presented with the chain of office by the Cork and Kerry County Mayors on the steps of City Hall in Boston in 2023. 

Attendees can look forward to a weekend filled with family-friendly events, including music, entertainment, and educational tours of historical O’Sullivan sites. Participants are encouraged to wear jerseys representing their local sports clubs, counties, or countries to showcase their pride. 

This event not only aims to set a world record but also offers a unique opportunity for members of the O’Sullivan Clan to reconnect with their heritage and explore their ancestral homeland.

For more info and to register for the event, visit osullivanclan.org.