Brendan Francis Cusack is an Irish and American dual citizen foil fencer who competes on the Irish national team.
Born in Summit, New Jersey, Cusack acquired Irish citizenship from his paternal grandfather, John Cusack, who was born and raised in Westport, County Mayo, Ireland. He grew up in Glen Gardner, New Jersey and attended North Hunterdon High School, where he won the New Jersey State individual fencing title in 2011.
Source: Wikipedia