My grandfather was John Joseph
McCartan of County Down - born there c. 1868-1870; his mother's name may have been Sarah
Keenan.
My grandfather was very vague about where in Down he came from - perhaps
Newry, or Downpatrick - but I've found birth records (likely for him) that list his parents as Arthur and Sarah (
Keenan)
McCartan of
Saul parish.
He emmigrated to the US in 1892, and settled in western
Pennsylvania (Pittsburgh and area). He had two siblings (that we know of) Mary and Peter, who settled in Philly. All, we think, came through
New York.
All we know of the family in Down is that the grandparents (McCartans and/or
Keenans) had a farm where my grandfather and the other siblings lived; their parents lived in the "city."
I've visited bulletin boards for the McCartans - they mostly lived (and still do) in Down and there apparently were a lot of them in Newtownards. So there seems to be a natural Keenan-McCartan connection.