Hi morag,
Janet, Thomas, Agnes, Margaret and James are all interred in the private walled burial ground at Cambusnethan, it is situated between the old churchyard and the new cemetery.
They are in a double plot, 158 & 159.
Janet & Thomas are in 158, the other 3 are in 159. All 5 are children of William Duncan and Janet Wilson.
JANET DUNCAN, housekeeper, Cairneyhead, aged 74 years, single.
Interred 10th June 1869.
THOMAS DUNCAN, farmer, Cairneyhead, aged about 70 years, single.
Interred 5th September 1872.
AGNES DUNCAN, housekeeper, Cairneyhead, aged about 70 years, single.
Interred 10th March 1873.
MARGARET DUNCAN, housekeeper, Stane, aged 76 years, single.
Interred 20th November 1882.
JAMES DUNCAN, farmer, Stane, aged 88 years, single.
Interred 11th February 1886.
It may be a red herring but, in the next plot (No.160) is -
EUPHEMIA ROBERTSON, domestic servant, Wishaw Hospital, aged 20 years, single.
Parents - Robert Robertson & Mary Duncan.
Interred 14th March 1874.
Also, I don't have the records for 1925 and you don't give too much information about John Wilson (parents names are always a big help) but could this be the same family?
Plot B495 in the new cemetery.
JESSIE WILSON, 49 Flowerhill, Airdrie, aged 1 year.
Parents - John Wilson and Mary Duncan.
Interred 17th May 1910.
ANNIE F.M. WILSON, Kirkhall, aged 7 weeks.
Parents as above.
Interred 8th January 1915.
In the next plot, B496 is -
MARGARET DUNCAN, aged 74 years, widow.
Parents - John Law & Elizabeth Lyon.
Interred 24th September 1913.
Lodger