Thanks Shane for your reply, yes I have a civil cert as well but there is no occupation listed for her father, just left blank, which is unusual. Susan's place of residence on both church and civil records is Baltinimina, which is a townland outside Roundwood, William Carr is from Slemaine another townland close by. The couple appear to have lived in Baltinimina after their marriage.I have checked the rental records for these 2 townlands from 1860 to 1900 and there are no White families recorded, but there is an Edward White and a John White recorded as tenants in Carraigshinnagh, another townland close by. The named tenant changes from John White to Laurence White( I think a son) in 1884 and then in 1886 the properties seems to revert back to the landlord. This could indicate the elderly White relatives that Susan came to look after had now died.The church marriage record lists an Ellen and James Brady as witnesses. There were quite a few Brady families living in the area and this couple match a couple of similar age to Susan and William, who are living in Baltinimia, so would appear to be neighbours/friends as I have not been able to connect them as relatives to either Susan or William. I have baptism records for Susan and William's 3 children but again no Carr, White or O'Neill appear, but names appear to match neighbouring families.
