The Robert aged 56 in the 1851 census of Lezayre with wife Esther, who looked like the Lezayre Robert widr aged 76 in 1871, appears to have been buried in Andreas (where his son? William Charles was living):
CORLETT, Robert [ag] 82 And 18 Sep 1877 [Brian Lawson's burial index],
and this will could be his:
CORLETT, Robert 1877 Lezayre, Epis, [no] 140 [LDS film] 0106485.

That would be well worth looking at, to confirm relationships.

Sue