Hi, are you still looking for info on this Thomas? I was researching him for a while because I thought he might be related to my Welch family since he lived right next door. (He still might be.)
In the 1880 U.S. census, he and Mary Brown were listed with six children:
The oldest son, Edward, I believe is named "Edmund" in earlier censuses. (This happened in my family as well, Edmunds became Edward after moving to the U.S.)
I was able to trace where Edmund died (the railroad must have transferred him to Illinois--- Thomas' obit says he worked for the railroad).
Here is the link to Edward's grave:http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=We...
Here is Edward's death certificate, and you can see that Thomas Welch and Mary Brown were his parents: http://search.ancestry.com/cgi-bin/sse.dll?rank=1&new=1&...
MOST EXCITING, (as I said, he was Edmund in earlier censuses, and then Edward) I found his baptism in Lixtaw, County Kerry, Ireland. It is for Edmund Walsh (all of my family was "Walsh" in the records in Ireland, "Welch," the phonetic spelling, once they got to the U.S.) born in 1861 to parents Thomas Walsh and Mary Brosnan. I believe that Brown must have been the understanding of the phonetic spelling of the way "Brosnan" was pronounced by the Irish. http://churchrecords.irishgenealogy.ie/churchrecords/details...
I also found a possible birth for Thomas as well. It is also in County Kerry and not too far from Lixaw where Thomas's son Edmund was born. Of course I can't be sure it's the right Thomas, because I didn't know his parents' names, but the father is Edmund Walsh, and I figured there was a good chance Thomas named his son after his father. I didn't find any other Thomas Walshes who fit this closely, even though it's a common name. http://churchrecords.irishgenealogy.ie/churchrecords/details...
I hope this helps and you can use the information on your family!
Thomas lived right next door to our Welches in Janesville, so we thought he might be related. I located our family in Cork, about 90 miles from where Edmund was born in Kerry, so they may or may not be related.