St. Paul's - Arran Quay, Dublin - Graveyard?

[Clarrie]

Well, it's (possibly) your lucky day.  The national Library of Ireland have just published a boat load of parish records this week.  Some kind people on the Mayo and Wicklow boards drew my attention to this.  If your ancestors had children their baptisms may be on there. The records aren't searchable, so you have to trawl through them, but it's potentially a marvellous resource.
Have a look at
registers.nli.ie for more information.

[dathai]

Michael Callaghan 1874
https://familysearch.org/ark:/61903/1:1:F5KR-FSC

http://churchrecords.irishgenealogy.ie/churchrecords/details/d8efe10113315

John 1879
http://churchrecords.irishgenealogy.ie/churchrecords/details/b558970120808

[taramcdsmall]

You can see their actual marriage on this link ~

http://registers.nli.ie/registers/vtls000633663#page/144/mode/1up

They were both living at Church Street at the time of their marriage.

John's father was called Michael

Mary's father was called John.

Both father's were deceased at the time of the marriage.

Tara

[taramcdsmall]

Have you looked for deaths and obits for John & Mary in the US to see if there is more mention of their parent's or their origins.

Calahan (& variants) & Rogers, while not rare in Dublin,  are not common either.

This couple may not have been from Dublin originally.

I get the feeling that they weren't as both gave 137 Church Street as their address at time of marriage, again while not rare, usually an unmarried couple would not both be at the same address at the time of marriage.

James Carr & Margaret Green were the witness' so no family to try and get leads from.

Have you gotten a county in Ireland from any Census ?

Tara