Hi Tom,
Saw your post. Here is a list of "Martin Tracey" state registrations for 1864-1870:
Tracy, Martin, Mountbellew, Galway. 1865 19 395
Tracy, Martin, Portumna, Galway. 1868 9 492
Tracy, Martin, Tuam, Galway. 1869 14 587
Treacy, Martin, Borrisokane, Tipperary North. 1869 13 414
Treacy, Martin, Roscommon, Roscommon. 1864 3 330
Treacy, Martin, Thurles, Tipperary. 1865 8 746
Treacy, Martin, Thurles, Tipperary. 1867 18 612
Treasy, Martin, Tuam, 1870 19 583
It may be possible that there is another "Patrick Tracey & Elizabeth Higgins". The recommon page is located at:
http://www.traceyclann.com/files/Roscommon.htmThis page also contains the 1901 census records. I think that they lived in Knockcroghery Village.
Did you sort out the marriage record. Perhaps they got married in 1882.
Regards,
Declan Tracey