Mary Ernst (nee Coalson), age 81, of Stratford, passed away on Sunday, December 17, 2017. Wife of the late Pierce Ernst. Mother of Michael (Petra) Ernst. Grandmother of Nicole and Michael Jr. Sister of Margaret Coalson. Services will be private. In lieu of flowers, memorial donations may be made to the Stratford Public Library, 303 Union Ave, Stratford, NJ 08084.