Hi Gerry
                 JOHN CUMMING- Death record from SP indicates he    died in Milton, Markinch on 14/4/1876 age 79, widower of Sophia Johnston. 
That would be more than likely Milton of Balgonie about a mile from Markinch. There is a small cemetery around the Church there.
Stuart Farrell in his Monumental inscriptions list 50 stones but  no Cummings
 I,m not sure of his exact birth details, but previous census data gives his place of birth as Ceres. Sophia Johnston was his second wife, she was born in Cupar on 21/4/1812, they married in Largo on 15/7/1850, they had a son John born Largo in 1851.  
Sophia was the widow of a Thomas Miller
Nothing for Thomas Miller
 and they had a daughter Janet born Ceres c1839 and she died Leslie 1901. 
Nothing on Janet
John Cumming,s first wife was Elizabeth Forbes, b Anstruther 22/1/1804 d c1840, married 1827 Largo they had a number of children, 
John b largo 1828, william born largo 1831, peter b largo 1833, possibly a Margaret and My direct relation David McRae Cumming b largo 1836 d leslie 1913, who married the above Janet Miller in East Wemyss on 24/12/1860. One strange thing I did notice that On David McRAE Cummind,s  birth cert his mother,s maiden name is given as Forbes, but on his death cert it is given as Bowman. How can one explain that? 
Its possible the the person who registered the death did not know her maiden name its not unusual.
John Cumming,s parents I think were John Cumming and Magdalene(Maitland) ?? Brown. 
Nothing for them     
I suppose even though he died in Markinch he may not have been buried there. 
There are lots of people without Headstones
See if there is anything of use below, you will already have most of it
118 James CUMMING died 17.8.1966 age 69
       Wife Elizabeth D MITCHELL died 27.2.1975 age 80
118  Agnes T MELDRUM died 11.8.1949 age 87
         John Cumming died 3.4.1955 age 89
Father: John Cumming, Mother: Elizabeth Forbes
  
 
 1. PETER CUMMINGS - International Genealogical Index 
Gender: Male Birth: 26 SEP 1833 Christening 29 SEP 1833 Largo, Fife,
  
 3. JOHN CUMMINGS - International Genealogical Index 
Gender: Male Birth: 12 DEC 1828 Largo, Fife, Scotland 
1881 Census
   Dwelling:   25 Glebe Park
   Census Place:   Kirkcaldy, Fife, Scotland
   Source:   FHL Film 0203527     GRO Ref    Volume 442    EnumDist 21    Page 25
   Marr   Age   Sex   Birthplace
John CUMMINGS   M   56    M   Elie, Fife, Scotland
   Rel:   Head
   Occ:   House Carpenter Employing 4 Men
Sophia CUMMINGS   M   57    F   Wemyss, Fife, Scotland
   Rel:   Wife
Danial CUMMINGS   U   26    M   Kirkcaldy, Fife, Scotland
   Rel:   Son
   Occ:   Iron Turner At Works
Isabella CUMMINGS   U   17    F   Kirkcaldy, Fife, Scotland
   Rel:   Daur
   Occ:   Linen Spinner
Sophia CUMMINGS   U   14    F   Kirkcaldy, Fife, Scotland
   Rel:   Daur
   Occ:   Factory Message Girl
Headstone Bennochy
  993   Erected by John Cumming in memory of his wife
   Sophia Doig died 4.10.1899 age 70
   Son William died 30.5.1860 age 5m
   Daughter Sophia died 8.11.1865 age 4
   Husband John Cumming died 27.12.1915 age 91
   Daughter Isabella Brown died 12.11.1929 age 65
 
 4. WILLIAM CUMMINGS - International Genealogical Index 
Gender: Male Birth: 29 MAY 1831 Christening: 19 JUN 1831 Largo, Fife,
1881 Census
   Dwelling:   40 Golfdrum St
   Census Place:   Dunfermline, Fife, Scotland
   Source:   FHL Film 0203520     GRO Ref    Volume 424    EnumDist 15    Page 6
   Marr   Age   Sex   Birthplace
Wm. CUMMING   M   50    M   Dunfermline, Fife, Scotland
   Rel:   Head
   Occ:   Linen Twister
Margt. CUMMING   M   52    F   Dunfermline, Fife, Scotland
   Rel:   Wife ( Mitchell )
   Occ:   Towmill Worker
Wm. CUMMING       13    M   Dunfermline, Fife, Scotland
   Rel:   Son
   Occ:   Factory Worker
Headstone Dunfermline
2077 William Mitchell CUMMING died at Hawarden Buffies Brae
   15.10.1944 age 77
       wife Elizabeth Harley BARCLAY died 12.2.1946 age 73
        daughter Elizabeth died 16.10.1984 age 78
       daughter Chrissie died 29.3.1996 age 98
Helen CUMMING   9 F   Dunfermline, Fife, Scotland
   Rel:   Dau
   Occ:   Scholar
 
 6. DAVID MCRAE CUMMINGS - International Genealogical Index 
Gender: Male Birth: 15 MAR 1836 Christening: 05 APR 1836 Largo, Fife
 
 1881 Census   
   Dwelling:   Walkerton Village No 40
   Census Place:   Kinglassie, Fife, Scotland
   Source:   FHL Film 0203525     GRO Ref    Volume 440    EnumDist 2    Page 31
   Marr   Age   Sex   Birthplace
David Mc Rae CUMMING   M   45    M   Largo, Fife, Scotland
   Rel:   Head
   Occ:   Flax Mill Labourer
Janet MILLER (CUMMING)   M   42    F   Ceres, Fife, Scotland
   Rel:   Wife
David CUMMING       17    M   Largo, Fife, Scotland
   Rel:   Son
   Occ:   Apprentice Mechanic
Sophia CUMMING       15    F   Largo, Fife, Scotland
   Rel:   Daur
   Occ:   Mill Worker
Thomas CUMMING       8    M   Largo, Fife, Scotland
   Rel:   Son
   Occ:   Scholar
Peter CUMMING       6    M   Markinch, Fife, Scotland
   Rel:   Son
   Occ:   Scholar
James M. CUMMING       4    M   Markinch, Fife, Scotland
   Rel:   Son
William CUMMING       1    M   Markinch, Fife, Scotland
   Rel:   Son
Elizabeth CUMMING       10    F   
   Rel:   Daur
   Occ:   Scholar 
Can’t find headstones for them 
Norrie