Sara:
Welcome to Ireland Reaching Out!
Matilda and James actually married in 1867 not 1857. See transcription below of the civil marriage record from the subscription site Roots Ireland. The record does show the names of the fathers of the bride and groom. I was not able to locate a baptismal record for Matilda in Co. Donegal. How else can we assist you?
Roger McDonnell
Date of Marriage:06-Jun-1867
Parish / District:BALLYARNETT
County:Co. Derry
Husband JamesKelley Address Waterside Londonderry Occupation Baker and Confect.
Wife MatildaMatthewsAddress: Londonderry
Denomination:Presbyterian
Husband's Father JamesKelley
Wife's Father AndrewMatthews