Foody (sometimes Swift) and Gilvarry

Hello, I've been searching brick walls when it comes to my Irish ancestors as they all left during the great hunger. I finally found a record, the baptism of my 2x great uncle Thomas Foody on 14 December 1843 to Martin Foody and Mary Gillvarry in Cooneal, Killala, Mayo. The reason I don't think I ever found this record before is because the format is strange leading to the father's and sons names to be confused with each other. The records on this particular page have the father's given name first, then child's given name, then the father's surname, followed by the names for the mother. The way I realized this was because I saw that the female children's names were listed where normally it would be the fathers. For example it might say, Michael, Bridget Flynn, Mary O'Neil. Obviously two women are not the parents. It's the only page I noticed like that but it's also out of order chronology with the other parish registers. Another mistake is the transcription of the record has the mother's maiden name listed as "Hillvery" when it is clearly Gillvarry. It took me actually reading through the microfilms rather then index searches. Now that I have this information, what else should I look for in this area? I don't think there is a marriage record available for Martin Foody and Mary Gillvarry. The oldest child I think was born before the records survived and as far as I'm aware the next children were born in Toxteth park, Liverpool England where the family fled. I see post famine there are three Foody's living in Killala in 1856 in areas designated Burke and Gardener. Any other suggestions for records that might exist for this difficult time period? Thanks