Fairlane,
I believe you are referring to Millockstown, a townland a few miles south of the town of Ardee. The townland is in the Civil Parish of Kildemock, in the County of Louth (Index to Townlands 1851). I was able to find it on Google Maps. Patt Jourdon was baptised on 23 August 1822, parents: Christy Jourdon and Catty McDonald.
One of the best townland surveys available for any townland in Louth, is that of Millockstown, written by Father Dermot McIvor in the Journal of the Louth Archaeological and Historical Society for the years 1952, 1953 and 1956. It comes to about 60 pages and includes church records up to about 1860 and other earlier records, including maps.
Regards,
Brendan