Robertson 's acting career began after a movie scout saw his photo . He was diagnosed with Stage 4 cancer last week while being treated for pneumonia . Comment: `` Robertson starred in the TV Western series `` Tales of Wells Fargo '' from 1957 through 1962 , riding a horse named Jubilee . He was in Hollywood when it was great , '' his wife says .
Robertson 's acting career began after a movie scout saw his photo . He was diagnosed with Stage 4 cancer last week while being treated for pneumonia . Comment: `` He was in Hollywood when it was great , '' his wife says .