Robert O. Poirier, 87, of Gorham, N.H., and previously of Berlin, N.H., died suddenly on Wednesday Aug. 14, 2019. He was born in Barton, Vt., on June 6, 1932, to Jacques and Yvonne (Bernier) Poirier. He moved to Berlin as a child, attended St. Kieran’s school and spent most of his life in the city.