I can't say when Mary Halliday died but, if she and her husband lived in the Wishaw area they would probably have been interred in the very large plot owned by the Gold family in Cambusnethan old churchyard.
There are 3 headstones on this plot but the late Victorian records indicate that there were actually two plots. However, my guess is, this was just one "giant" plot and the cemetery authorities who took over the running of the churchyard in the 1870's, weren't too sure how many compartments were in that particular piece of ground. (Cambusnethan used the descriptions "North", "South" and "Centre" to distinguish where in the plot each corpse was interred, different terminations were used by other parishes, Avondale for example, used "buried in the 1", "buried in the 2" and so on.
Unfortunately in the case of the Cambusnethan burials, written records for the churchyard were not recorded until about 1875, these records are augmented by records of daily interments in the Day Book for the adjoining municipal cemetery.
So, here's what the Victorians have to tell us about the Gold family plot.
first of all, the owner of both plots was Andrew Gold.
In the South compartment - (all dates are of interment)
ROBERT MUIR, aged 66 years. 16th February 1888.
REBECCA MUIR, aged 74 years. 9th January 1892.
JOHN MILLER, aged 33 years. 1st November 1879.
A. GOLD MUIR, aged 9 months. 26th January 1880.
REBECCA MILLER, aged 39 years. 18th October 1886.
In the Centre compartment -
CATHERINE GOLD, aged 55 years. 13th October 1889.
ANDREW GOLD, aged 61 years. 14th November 1898.
JOHN M. GOLD, aged 22 years. 2nd September 1895.
- - - - - GOLD, no age given. 4th August 1900.
To add to the list are the following entries from the gravediggers Day Book.
STILLBORN FEMALE MUIR, Cambusnethan.
Parents - Robert Muir & Rebecca Gold.
Interred in the old churchyard, 1st April 1863.
REBECCA GOLD, Cambusnethan. Aged 77 years. Widow.
Parents - George Kilpatrick, no mother's name given.
Interred in the old churchyard, 25th July 1867.
GEORGE JAMES GOLD, Braidwood. Aged 3 years & 9 months.
Parents - Andrew Gold & Catherine Oman.
Interred in the old churchyard, 13th February 1875.
BELLA M.M. GOLD, Carluke. Aged 8 years.
Parents - Andrew Gold & Catherine M. Oman.
Interred in the old churchyard, 17th January 1878.