Complex sentence: All three women were members of the Inghinidhe branch of Cumann na mBan and served in the Marrowbow Lane garrison during the Easter Rising with others like Marcella Cosgrave.
Split into simpler sentences: All three women were members of the Inghinidhe branch of Cumann na mBan. They all served in the Marrowbow Lane garrison during the Easter Rising with others like Marcella Cosgrave.