Neilan family from Kilfarboy

I am seeking information on my Neilan/ Killeen ancestors from the Miltown Malbay and Boyle ( roscommon) areas.

Francis Neilan was born 1838 Baptism Date 25 Nov 1838 Baptism Place Milltownmalbay, Clare, Ireland   Kilfarboy Diocese Killaloe Father In Neilan ? John Neilan Mother Helen Killeen

He emigrated to Melbourne Aust ( Francis Neylon) on the Shalimar in Nov 1857 with a John Neylon, According to some of his records his father was John Neylon stonemason and mother Ellen Killeen- which matches the birth record above. He continually changed his name in Aust between Francsi Neylon and Francis Neylon O'Brien ( O' Brian). He had a daughter with Mary Keith (who died soon after the birth) and his daughter also used the name Nailen and O'Brien.( She was my ggrandmother)

Francis was a very colourful character in Aust- he made several attempts to get into parliament in the Newcastle district and was reported in the papers as quite an orator. He fought for the rights of the miners but alcohol seems to have been a problem for him. I have not found his death certificate yet.

I found some records  in Ireland - Miltown malbay for Helen 1833, Anne 1840, Nacy 1841, Patrick 1843 - children of John Neilan and Helen Killeen. Ann married Patrick Durr in 1867 in Biyle Roscommon.

I have been unable to work out whether John and Ellen remained in Ireland or emigrated at a later date.

I found a baptism in 1805 in Boyle for a Johannis Neilan.

I would appreciate any help anyone can give me on the family in Kilfarboy.

Thanks

Joy