Con Colbert was a native of Limerick. Before the Easter Rising he had been an active member of the republican movement, joining both Fianna Éireann and the Irish Volunteers. He was the captain of F Company of the Fourth Battalion and was in command at the Marrowbone Lane distillery when it was surrendered on the 30th of April, 1916. Colbert was executed on the 8th of May 1916.