never found out what happened to his son Robert Philp whom so far I have only found as a child in the 1841 census.  Could you please check and see whether there are any Robert Philps in your Markinch list?  
Hi Straea   no nothing in Markinch but there is this one in Bennochy Cemetery
Kirkcaldy, 
330   In Memory of Christina BEATON wife of Robert PHILP
   died 18.3.1906 age 72
   above Robert PHILP died 13.8.1915 age 81
   daughter Margaret died 18.10.1948 age 79
yes his birth is right 1834 and on the 1881 census there is this one
Dwelling:   St Clair Street Station House
   Census Place:   Dysart, Fife, Scotland
   Source:   FHL Film 0203522     GRO Ref    Volume 426    EnumDist 11    Page 22
   Marr   Age   Sex   Birthplace
Robert PHILP   M   47    M   Markinch, Fife, Scotland
   Rel:   Head
   Occ:   Railway Station Master
Christina PHILP   M   48    F   Croy, Inverness, Scotland
   Rel:   Wife
John PHILP       12    M   Stratmiglo, Fife, Scotland
   Rel:   Son
   Occ:   Railway Booking Clerk
Margret PHILP       11    F   Milnathort, Kinross, Scotland
   Rel:   Daur
   Occ:   Scholar
Robert PHILP       6    M   Kincarden, Fife, Scotland
   Rel:   Son
   Occ:   Scholar
Alexr. PHILP       4    M   Kincarden, Fife, Scotland
   Rel:   Son
Christina PHILP       2    F   Kincarden, Fife, Scotland
   Rel:   Daur
Picture available, let me know when you check his death certificate
Norrie