I have spent some time trying to track your information, Have you seen the most detailed information on the marriage, both civil and catholic in 1883. naming which church or chapel would also be useful. Some versions are listed by
http://www.ancestryireland.com VALLELY SAMUEL JAMES 1883 Down
VALLELY SAMUEL JAMES 1883 JOHN Down
I suggest unless you have proof about the first name John, it might be wise to keep James as an alternative see the familysearch marriage below . Another thought was could John or James the father have emigrated
The website also has information on the birth/baptism for
BRIDGET VALLELY 1888 SAMUEL JAMES Down
ELIZABETH VALLELY 1890 SAMUEL JAMES Down
Do any of these give location information and addresses of relatives or witnesses
I noticed Mary Ann Vallely on the census of 1901 High Street Newry living with her Grandparents Patrick Murphy and Bridget McElroy Murphy. Her name is spelt Valley
I found on
www.familysearch.org a birth and his marriage 1883
Samuel James Vallely
Ireland Births and Baptisms, 1620-1881
birth: 8 February 1864 0029, ARMAGH, ARMAGH, IRELAND
father: James Vallely
mother: Eliza Brison
I also found another marriage Samuel James Vallaly
Marriage
Oct - Dec 1898
Armagh, Ireland
Armagh
Volume Number:1 ; Page Number: 57GS Film number: 101259 , Digital Folder Number: 004195895 , Image Number: 00145
Then I found
Eliza Vallely
mentioned in the record of Mary Ann Vallely
Name: Eliza Vallely
Gender: Female
Daughter: Mary Ann Vallely
Other information in the record of Mary Ann Vallely
from Ireland Births and Baptisms
Name:
Mary Ann Vallely
Gender:
Female
Birth Date:
23 Jul 1875
Birthplace:
Armagh, Ireland
Mother's Name:
Eliza Vallely
Indexing Project (Batch) Number: C70159-6 , System Origin: Ireland-EASy , GS Film number: 255934 , Reference ID: v 11-1 p 34
I need to stop there