Bridget Burns appears in the 1871 census living in Seaforth with her children Amelea, Mary, John and James. The religion shown for them in census records is Church of England and Bridget is a widow. I am looking for information about the DEATH of her deceased husband named JOHN BURNS, who would have died in the 1870-71 time period (one of his children, James, was less than 6 months old at the time the 1871 census was taken). There may be church or civil records. Somewhere there should also be a record of a marriage in 1870-1871 between John Burns Bridget (Bridget's surname shown on a marriage record could be either her maiden name, Gorman, or her previous married name, Johnson).

this might be the right john - list church of england as demonination

Name: John Burns
Death Date: 31 Jul 1871
Death County or District: Leeds and Grenville
Age: 37
Gender: Male
Estimated Birth Year: abt 1834
Birth Location: Elizabethtown

and i could not understand about marriage - are you saying that kids are not john's and couple just recently married or are you looking for their son john's marriage?