Reilly from Killashandra/Drumcrow

I am looking for any information on a Thomas Reilly born 1835 in Drumcrow County Cavan Ireland. I believe Drumcrow is part of or near Killashandra? He married to Margaret McManus born 1839 in or about 1859 or 7 in Killashandra. They are my 2nd great grandparents. Thier son Thomas born 1866 is my great grandfather , I have his bith info ..

I am thinking that there maybe more than one Thomas Reilly born 1835 in Drumcrow? I found info of one Thomas Reilly with parents Constantine Reilly born 1803 and Catherine Hayes. But with them in 1844 Constantine Reilly left Ireland with a number of his kids Rose , Honoria, mary , Matthew , and Patrick and Thomas Reilly b 1835.
I have dna matches to mary Reilly and Rose Reily . All this means is they and Constantine Reilly are matches to me ...If this info and this Thomas Reilly is my 2nd great grandfather that means he made enough money by mid 1850s abt age 20 to go back to Ireland and marry Margaret McManus. I forgot to mention when Constantine Reilly left Ireland he left his wife and a few kids i do not believe he ever sent for them.

So there may have been more than one Thomas Reilly born 1835. ???