Malachy Ryan and Margaret O'Brien family of Doon and Clonkeen

I am looking for info on the family of my gg grandfather, Malachy Ryan from Doon (c 1799-1874) who married Margaret O'Brien of Clonkeen (c 1800 - 1878). Children that I know of are: John, Bridget, Mary, Michael, Malachy, Margaret, Patrick, James and Terence. They immigrated to the US and settled in Massachusetts and Connecticut (except for Margaret and James. I don't know whether they immigrated or not). Most of them, here in the US, were hatters. Malachy and Margaret settled in Lawrence, Massachusetts. Their children settled in Lawrence and Haverhill, Massachusetts and Danbury, Connecticut. Michael's naturalization papers say that he was from Clonkeen and the Griffith's Valuation for Clonkeen shows a Malachy Ryan leasing from Terence O'Brien. I found some of the children's baptismal records online and all but one that I found were from Murroe, Boher and Abington parish. Bridget's record, however, says she was baptized in the Doon and Castletown parish.

I did the Ancestry DNA test and a DNA match came up for someone who had a tree on Ancestry. We are predicted to be 4th cousins. On looking at his tree I saw that one of his ancestors was John Ryan of Doon who was married to Mary Burke. Because of the DNA match with this person and the prediction that he is a 4th cousin, I think the John Ryan married to Mary Burke might be a sibling to my gg grandfather Malachy. I do not know his parents' names but have suspected that his father was named John. Malachy's first child that I know of was named John. The time seems right. John, married to Mary Burke, was born circa 1788, thus possibly an older brother to my Malachy who was born circa 1799. John's first child was also named John, which might indicate that both of these possible siblings were following the Irish naming patterns and naming the first-born child after the father's father. The fact that DNA connects me to one of the descendants seems to confirm a blood relationship.

If anyone has any knowledge of this family in Ireland, I would appreciate any info you could share. Thanks.