Hi, His death record is in 1867, maybe he passed in December and wasn't registered until the January the record will tell you.
The get a record got to this site. Go to Civil records and enter his name and 1867 then look for Dundalk.
Follow the link as the link as the image is not there, you will get a copy of the actual record entry.
It will be 5 Euro.....£4.45 ish. They will contact you to say they have it then you pay and then they send it to you.
https://www.irishgenealogy.ie/en/you should end up on this page.
https://www.irishgenealogy.ie/en/civil-records/help/i-want-to-get-a-copy-of-a-certificate-what-do-i-doThis is him in the Tithe records 1823 to 1837
https://titheapplotmentbooks.nationalarchives.ie/search/tab/results.jsp?surname=hughes&firstname=arthur&county=Louth&parish=&townland=&search=Searchthis is the map......Bailyand is the townland name.
https://www.townlands.ie/louth/louth/louth/louth/bailyland/Ok,
Maggsie