Just a few specific comments/ questions
Elwyn Soutter In your message you say that you could not find the baptism of a John in 1836. I must have made an error as John's baptism was in 1939. I think Heywood found it but recorded it as Jane and Not John.
In your message you refer to the Parishes of Kilkeevin and Roscommon & Kilteevan. Are there really two parishes with such similar names (Kilkeevin and Kilteevin)?
Can I now be cheeky. The list I have on the piece of paper includes 4 marriages Haywood gave me two of them. Can you please check if the other two are on the website you refer to. The relevant marriages are:
A John Audley in 1825 and
A Michael Audley in 1850.
I would like to see more information from the newspaper records of the various people with the Audley Surname in Roscommon, could those people who have given me the information please give me a link to the source.
Baptism register was in Latin. Sometimes transcribers mistake John for Jane and vice-versa as the Latin names both begin "Joan", followed by the masculine or feminine case ending. It's sometimes unclear whether a letter is "a" or "e" . Some priests abbreviated the Latin word for son or daughter to "f." or omitted it.
To see names of parishes on a map go to Catholic Parishes at National Library of Ireland and put Kilkeevin in the search box. You'll be able to see Kilteevan on the map not far away.
https://registers.nli.ieJohn Audley 1825 marriage was in Athleague parish (FindMyPast free search). Easy to find in the marriage register on the National Library of Ireland Catholic Registers site. Look out for Joannes. Bride was a Sharkey ("Sharkee"). Note a witness was a Madden ("Maddin). Weddings were usually in the bride's parish.
Michael Audley 1850 marriage was in Boyle. I couldn't see it in the Boyle marriage register.
I used FindMyPast for newspaper articles. There are other newspaper collections, some indexed online.
