Born in 1891, he was responsible for the organisation of Fianna Éireann in Limerick. Along with Con Colbert, Heuston was involved in the education of the schoolboys at Scoil Éanna, organising drill and musketry exercises. A section of the First Battalion of the Volunteers, under the leadership of Heuston, occupied the Mendicity Institute on south of the Liffey, holding out there for two days. He was executed on 8 May 1916. Heuston Railway station in Dublin is named after him.