Marriage Lookup Please

[ldepanian]

Hi....
Am fairly new to what Irish records are available....and feel a little daunted by the scarcity of records available online.  But am wondering what the likelyhood might be of someone being able to locate a marriage record for John Dunn (occupation tailor) to Mary Flannigan.  I believe the marriage took place in Portadown and would have been ca. 1834-1836.
John and Mary had the following known children (just in case this rings a bell with anyone out there)
Patrick
Charles
Mary
Luke

Any help or advise is greatly appreciated.  Not sure what the next steps should be for me or exactly how to obtain this information from the U.S.

Much appreciated!
Regards,
Linda

[scotmum]

Lurgan is about 6 miles from Portadown so some of the info on the following site may be of help:

http://lurganancestry.net/introduction.asp Link now broken

[ldepanian]

Thank you for the link.  While I found it of great interest and have bookmarked it for possible future use, alas, I was unable to locate my Dunn/Flannigan connection.

Thank you again!
Linda