Judy,
I think your baptisim date for Thomas Caine comes from this earlier posting:

Posted By: John Caine Date: Saturday 6 February 1999, at 6:57: p.m.
"A MATT CAIN married JANE CUBBON 1 August 1799 at Kirk Braddan.
They had a son THOMAS CAIN baptised 12 July 1812. (Can't read
where)."
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Another choice from the IGI is:

Individual Record Thos. CAINE
Christening: 24 Jun 1813 Kirk Michael, Isle Of Man, England
Parents: William CAINE Christian_ CAIN
Batch number:7232710 Source Call No.0822074 Sheet:38