Hello WeeVee and welcome to RootsChat.
I only have records up to about 1916 and the years 1915 & 1916 are not complete, so unfortunately, I didn't find your grandfather. I did however, find the baby who died in 1911. She is buried in Section E, plot 32. Listed below are 5 infants, all buried in this plot between 1896 and 1915. I would expect that both your grandparents will be in here. The only way to find out is to contact North Lanarkshire Council at the Cemeteries Admin in Philip Murray Rd, Bellshill or, if you live near the cemetery, try your luck with the foreman gravedigger in the wee office just inside the old gate.
MUNGO FORREST, Newmains, aged 16 months.
Parents - John Forrest and Margaret Fleming.
Interred in E32, 25th August 1896.
JOHN FLEMING, Newmains, aged 11 days.
Parents - Robert Fleming and Marion Dove.
Interred in E32, 2nd April 1898.
ROBERT FLEMING, Cambusnethan, aged 7 months.
Parents - Robert Fleming and Marion Dove.
Interred in E32, 22nd November 1907.
ELIZABETH M. FORREST, Cambusnethan, aged 6 months.
Parents - John Forrest and Annie Ruth Murray.
Interred in E32, 20th September 1911.
MARY McCORMACK FORREST, Carluke, aged 9 months.
Parents - William Forrest and Mary Hinshalwood.
Interred in E32, 27th May 1915.
Good luck with the rest of your research,
Lodger.