John Bulmer Hobson (14 January 1883 – 8 August 1969) was an Irish republican. He was a leading member of the Irish Volunteers and the Irish Republican Brotherhood (IRB) before the Easter Rising in 1916. Hobson swore Patrick Pearse into membership of the IRB in late 1913. He opposed and attempted to prevent the Easter Rising. Hobson was also chief of staff of Fianna Éireann, which he helped to found. Source: Wikipedia (en)