1851 census DurhamRestigouche County NB
James, 28, Scotch, handy man, b NB
Margaret, 24, French
Margaret, 3, NB
Agness, 1, NB
They are living with Joseph Logan, 77, Spaniard, entered NB August 1816.
Didn't find them on 1861 census but here they are on 1871 census Beresford Gloucester NB
James, 51, b Canada, Catholic, French, labourer
Margaret, 70, b Canada, widow
Ritchard, 28, b England, Church of England, labourer
Margaret, 24, NB, Roman Catholic, French
Marthia, 4/12, b August
They are listed as living in one house.All of James/Margaret's born NB, Catholic and French descent.
1881 census Durham Restigouche
BLAIR, James 62, Margaret 58, James 22, Michael 20, Elizabeth 18, J William, 11, Margrat,90.
Here is a death but maiden name is different but everything else fits.
Margaret Russell wife of James Blair of Belludune NB died 3 March 1892 at Belludone, female, 69yrs, farmer's wife, b Bathurst NB, Catholic, died of consumption.