Original artist of green green grass of home?

"Green, Green Grass of Home", written by Claude "Curly" Putman Jr., is a country song originally made popular by Porter Wagoner in 1965 and Bobby Bare in 1965. It was sung later by Tom Jones in 1966 when it reached number one in the UK Singles Chart on 3 December staying there for a total of seven weeks.[1] It had also been recorded the previous year, 1965, by Jerry Lee Lewis, and included on his album "Country Songs For City Folks" (later re-issued as "All Country"), and Jones learned the song from Lewis's version. The Tom Jones record reached #11 pop, #12 easy listening on the Billboard US charts.