Thankyou, Sue Pedersen for your reply, I should have added Archibald Looney 's date of burial,

21 March 1892 at Ballamilgyn

aged 74
makes Him born c 1818

Ann Looney ( Camaish ) date of burial,

3 August 1887 at Ballamilgyn,

aged 76
makes Her born c 1811

I have found a baptism for Ann Camaish,

12 June 1811 in Andreas,
Father, Matt Camaish
Mother, Elizabeth Garrett
( I can't find their marriage )

Maybe, Archibald added to His age on the Census, because, Ann was older than Him ?