The O'Leary Family Reunion is an annual gathering of the O'Leary family, bringing together relatives from various locations. This event typically includes activities such as games, food, and storytelling, allowing family members to reconnect and strengthen their bonds. Held in a park or a family member's home, the reunion often features a potluck meal where everyone contributes a dish. The event may also include a family tree presentation, showcasing the history and lineage of the O'Leary family, making it a meaningful occasion for all attendees.