Searching for Donoho connections in Carigallen

I am trying to learn more about my Donoho relatives who lived in Carigallen. There was quite a legal case concerning the estate of Philip Donoho who traveled to the US and then on to San Francisco around 1850. He died in 1878 and a relative by the name of James Donoho who lived in Carigallen attempted to claim Philip's estate despite the fact that Philip left his estate to my gr. grandmother Maria Donoho Carroll and her two siblings who went to the US at the same time.

After ascertaining that my gr. grandmother was indeed alive, James Donoho who traveled from Carigallen to the US to claim the estate was denied any part of the estate.

There was testimony taken in late 1879 of my gr. grandmother Maria. She traveled to Ireland with her lawyer. Although she grew up in Carigallen, the testimony and family testations were done in Arvagh, Co. Cavan.

Maria's father, Bernard Donoho traveled to the US before his children. I do not know what happened to his wife in Ireland or what her name was. She may have died in a workhouse or from cholera.

I have newspaper articles from here in the US. I would just like to be able to acquire the paperwork from the testimonies there and any other information about the Donoho family. From what I understand, Maria and her family were part of the diaspora due to famine. There may have been other siblings etc. who died in Ireland. James Donoho, trying to claim the estate, declared that they were all dead but of course it turned out that they were very much alive in the US (or I wouldn't be here!).

Any help on finding out more would be so very much appreciated.