John R.(Jack) McCahill of 108 Knox Ave.;Monessen;died Monday;June 19;1978;at 7:15 p.m.in Mercy Hospital;Pittsburgh;following a lingering illness. He was 72. Mr.McCahill was born September 18;1905;in Black Diamond;a son of the late William (1874-1960)and Christina Renk McCahill(1874-1925). A Mon Valley resident his entire life;he retired from the maintenance department of the Page Division of American Chain and Cable Co.;Monessen;in 1967. Mr;McCahill was a member of St.Leonard’s R.C.Church and B.P.O.E. 773;both in Monessen. His wife;Anna Marie Lahey McCahill;preceded him in death on May 30;1969;as did a brother;Thomas McCahill;in 1966. Survivors include one sister;Mrs.Albert (Rose) Collins of Monongahela;one brother;William E.McCahill of Monongahela;and several nieces and nephews. Friends will be received in the Rhome Funeral Home;Inc.;1209 Grand Blvd.;Monessen;after 7 p.m.Wednesday. A prayer service will be held at the funeral home Friday at 9 a.m.followed by additional services at 9:30 a.m.in St.Leonard’s R.C.Church;Monessen. The Rev.Henry P.Dinicco will officiate. Interment will be in Belle Vernon Cemetery. Rhome funeral directors are in charge of arrangements.