Hi Maggsie
Yes, there was a Daniel. The known children were Maurice, Deborah, Margaret, Ellen and Daniel. Deborah and Ellen came to Australia while Margaret went to America. I actually laughed when I saw Jeannie and Julia. Although I go onto the Irish genealogy website, Ancestry has the actual documents. As for Daniel and Maurice: there is Daniel recorded as dying young and of Maurice, there a few Maurice Cahill's married in Tralee that fit his time frame. John Cahill and Julia Broshinan (different spellings), the parents, were married in Tralee in 1852. John and Deborah were living in Boherbee at the time of their marriage in 1882.
As for John, no that is not him. His parents were John O'Brien and Mary unknown. The closest I got was a John born about 4 miles from Killarney itself. Folklore says he had a sister Bridget and another sister called Mary but I can find no trace of them. As an off shoot, I purchased all of John and Deborah's children's birth certificates and found that he was employed as a labourer for the Central Railways in Queensland. Now that I have them all I will contact Qld Rail for any records of John and hopefully his birthday will be listed. Not all Qld Rail records from the time period have a birthday recorded. Previous to my purchasing all the birth certs, I couldn't contact them as I had no idea where the were stationed and the amount of John O'Brien's hired during the period is quite large so I needed the camps of where they lived to indicate that this is the John that I am searching for.
Thankyou for your interest.
Cheers from Jenny