Hi, I've never determined which Eliz Caine it was that md John Brew in 1831. Do you know her lineage?
Per censuses she was b in Michael parish, ages vary with birthdate 1807-09.

I know who she isn't
Eliz 1808 Michael d/o Thos Caine/Ann Clark died at 1 yr
They had another Eliz 1810 who md Thomas Cain a vicar in London per mo's 1847 will

Eliz 1808 Marown d/o Robert Caine/Elizabeth Kelly d 1879 a spinster in Douglas

Eliz 1808 Malew d/o Thomas Caine/Elizabeth Mylchreest was primary heir of mo in 1860 listed as Eliz Caine

There are several more possibilities--patron submissions, parish extractions.

Donna