My great grandparents were Miles Kilker & Hanora Barrett.
Over this past year I've used the research services of Eneclann in Dublin,Ireland.
I've been looking for Miles parents Owen & Ellen Kilker. They found a marriage record from April 1840 for Owen and Bridget O'Maly( O'Malley) and a baptismal record of a female child, Mary born in November 1843. They were not able to find any other records but according to Eneclann there's big gaps in Roman Catholic registers for births and marriages. The one other clue they told me is that the vernacular for Owen is Eugene. So it's possible that he could be listed in some documents as Eugene. I'm not sure about the Ellen versus Bridget difference other than being told that the middle name could be used as a first name at times.
I do know Miles had a sister Mary and possibly a brother named Owen. They also had other sibblings but unknown at this time.
If anyone can connect to this post I would love to hear from you. Thanks, Kate