Wilbur H.Wallace;83;of 380 Fells St.;Belle Vernon;died Monday;July 28;1997;at 9 a.m.in Haven Crest Convalescent Center;Carroll Township.  He was born Feb.16;1914;in Monongahela;a son of the late Charles and Lillian McClain Wallace.  Mr.Wallace was a member of the Pricedale Union Church and the Belle Vernon Golden Agers.  He lived in the Belle Vernon area for the past 60 years.  He retired from the Wheeling-Pittsburgh Steel Monessen Plant in 1976.   On June 29;1935;he married Marie Trozzo Wallace;with whom he celebrated 62 years of marriage this past June 29.  In addition to his wife;survivors include one son;Lee E.Wallace of Bayville;N.J.;one daughter;Joan M.Wassilchalk of Belle Vernon R.D.1;one sister;Frances Colvin of Belle Vernon;four grandchildren;Laurie Johnson;Daniel Wassilchalk;and Lynn and Lisa Wallace and five great-grandchildren.  In addition to his parents;he was preceded in death by one brother;Albion Wallace and one sister;Sara Kimball.  Friends will be received Wednesday 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 Thursday at 11 a.m.with the Rev.James Mimidis;pastor of the Pricedale Union Church;officiating.  Burial will be in the Belle Vernon Cemetery.  The Ferguson Funeral Home Inc.is in charge of the arrangements.