I have your family in the Cambusnethan cemetery records.
Their plot is in the oldest section of the "modern" cemetery, it is called Low Public and opened in 1861.
The Ramsay lair is number 19, so they would have been one of the first to purchase a lair.
I also have a picture of the stone, it has been cleaned-up, perhaps by you or another family member?
The burial records I have finish at 1917, sorry.
All dates are of interment.
JOHN RAMSAY, Stane, aged 3 weeks.
Parents - James Ramsay & Elizabeth Meek.
Interred in Low Public 19, 28th October 1861.
WILLIAM RAMSAY, Stane, aged 4 years.
Parents - James Ramsay & Elizabeth Meek.
Interred in Low Public 19, 16th May 1863.
MARY ANN WALLACE RAMSAY, Stane, aged 1 year.
Parents - James Ramsay & Elizabeth Meek.
Interred in Low Public 19, 18th January 1864.
JAMES RAMSAY, grocer, 4 Main Street, Stane. Aged 82 years. Widower.
Parents - William Ramsay & Eleanor Donaldson.
Interred in Low Public, 3rd January 1916.
I think this must have been a double lair, probably 19 and 20. I can't find any reference to 20 in the records.