what regiment at Crinkle 1821 census ?

[CLT]

I have a census record of an ancestor at New Barracks, Crinkle, at Birr, Offaly, Ireland. He was a private aged 33yrs ( name Henry Martin). Unfortunately his regiment is not recorded. Is there any way to find out what regiment was stationed in Crinkle when the 1821 census was taken? There are too many Henry Martin's listed on the Britsh Army Service Records to be of help. And I don't have his date or place of birth. Any advice?

[km1971]

If you post the names of any officers (Ensigns, Captains etc and above) we can look in an Army List of the time.

Where did you find details from the 1821 census?

Ken

[t mo]

according to an article i,ve just read in ancestry the 40th of foot were supposed to have been in ireland in the 1820,s .
trevor

[CLT]

Thanks km1971 and t mo for replying.
The census record was obtained from RootIreland.ie.
 I'll try and input the 40th of foot and see if it reduces the number of Henry Martins on the Army Service Reccords. Fingers crossed !