Do you have a Baptism for, Mathew Garret and Ann Cowin ???
all I can find is these 2 Baptisms for Mathias Garret.

name: Matthias Garrett
gender: Male
baptism/christening date: 28 Apr 1790
baptism/christening place: RAMSEY,ISLE OF MAN,ENGLAND
father's name: Wm Garrett
mother's name: Esther Christian
indexing project (batch) number: C03827-1
system origin: Isle_Of_Man-ODM
source film number: 106741

name: Matthias Garret
event: Christening
event date: 10 Mar 1793
event place: Braddan, Isle of Man
gender: Male
father: Matts Garret
mother: Cath Quay
digital folder number: 004494646

LDS search 1841 Census England.

Mathew Garret
England and Wales Census, 1841 birth: 1791
census: 1841 Arlecdon, Cumberland, England

Mathew Garret
England and Wales Census, 1841 birth: 1791
census: 1841 St Bee, Cumberland, England

It is the same census image for – Arlecdon and St. Bee, Cumberland, England

Mathw Garret
England and Wales Census, 1841 birth: 1791
census: 1841 Earsdon, Northumberland, England

Mathw Garrett
England and Wales Census, 1841 birth: 1791
census: 1841 Liverpool, Liverpool, Lancashire, England