Hello Sue,
The death date came from a submitted entry, sorry I forgot to delete it,

Have you seen these 2 Matthias Cain’s,

burial,
CAIN, Mathias 75 Onchan 12 Apr 1853 (age at death matches Baptism year)

name:Matthias Cain
gender:Male
baptism/christening date:28 Feb 1778
baptism/christening place:ONCHAN,ISLE OF MAN,ENGLAND
father's name:John Cain
indexing project (batch) number:C03823-1
system origin:Isle_Of_Man-ODM
source film number:106715

or

burial,
CAIN, Matthias 92 Onchan 16 Apr 1857 (age at death matches Baptism year)

name:Matthias Cain
gender:Male
baptism/christening date:10 Feb 1765
baptism/christening place:ONCHAN,ISLE OF MAN,ENGLAND
father's name:Wm Cain
indexing project (batch) number:C03823-1
system origin:Isle_Of_Man-ODM
source film number:106715

www.familysearch.org/s/search/index/record-search#searchType=records&filtered=true&fed=true&collectionId=1708663&advanced=true&givenName=Matthias&surname=Cain&eventLocation=Isle+of+Man&eventYearFrom=&eventYearTo=

burials,
CAIN, Mathias 75 Onchan 12 Apr 1853
CAIN, Matthias 92 Onchan 16 Apr 1857

or try a different way and check,

MARGT QUARK
Christening:
06 DEC 1778 Onchan, Isle Of Man
Father: Danl. Quark

Wills,
QUARK, Daniel 1831 Braddan E 10106431
QUARK, Ann 1794-2 Onchan E d 0106404

DANIEL QUARK
Spouse: Ann Quine
Marriage:
27 JUN 1775 Onchan, Isle Of Man

Burial,
QUARK, Ann Onchan 28 Oct 1794 QUINE

hope this helps,