Stewart U.Thorpe;76;of Voyager Estates;West Newton (Rostraver Township);died Tuesday;May 12;1998;in Mon Valley Hospital;Carroll Township.  He was born Sept.8;1921;in Fayette City;a son of the late John and Margaret Usher Thorpe.  He was a member of the Rehoboth Presbyterian Church;Belle Vernon.  He resided in Rostraver Township for the past 45 years.  He retired in 1982 from the Allenport Plant of Wheeling-Pittsburgh Steel;having worked in the hot mill.  He was a U.S.Army veteran of World War II.  Survivors include his wife of 46 years;Alois Knight Thorpe;one son and daughter-in-law;Richard and Jolie Thorpe of Fredericksburg;Va.;five brothers;John and Gene Thorpe of Perryopolis;Robert Thorpe of Anaheim;Calif.;Mickey Lee Thorpe of West Virginia;and Ronald Thorpe;three sisters;Pearl McCoy of York;Charlotte Santo of Roscoe;and Donna Lessmans of Charleroi;and one grandson;Robert Thorpe.  In addition to his parents;he was preceded in death by a son;Stewart Russell Thorpe;in February 1959;and two sisters;Hanna Jones and Edith Mowery.  Friends will be received Thursday from 7 to 9 p.m.and Friday from 2 to 4 and 7 to 9 p.m.in the Ferguson Funeral Home Inc.;700 Broad Ave.;Belle Vernon;where funeral services will be held Saturday at 1 p.m.with the Rev.Richard C.Klein;pastor of the Rehoboth Presbyterian Church;officiating.  Burial will be in Belle Vernon Cemetery.  The Ferguson Funeral Home Inc.is in cahrge of the arrangements.