Motherwell Heritage Center came back with this today. Francis, Catherine & Peter are definately my relatives. I am not sure yet about Hugh & Mary.
Airbles Cemetery, Private Ground
Francis Farrell, 2 Orbiston Street, Age 1 month, Parents Peter Farrell and Mary Fagan, Lair No. 152C, date of burial 3 Jan 1921
Catherine Farrell, 2 Orbiston Street, 14 months, Parents Peter Farrell and Mary Fagan, Lair No. 152C, date of burial 30 January 1922
Peter Farrell, Steelworker, 25 Etive Street, Wishaw, Age 63, parents Peter Farrell and Mary Fagan, Lair No. 2488H, date of burial 1 October 1969
Also in Lair 152C:
Edward Fagan, Labourer, 17 Millar Street, Age 65, Widower, Parents Hugh Fagan and Mary McDonald, date of burial, 14 October, 1920
Annie F. Murphy, Housewife, 6 Lauchope Place, Chapelhall, Age 61, Parents Hugh Fagan and Mary Quingle, date of burial 19 March 1921
I have no idea about lairs. Was everyone that was related buried in one lair?