My name is Clare Horgan I am a volunteer for the Claregalway area in Co. Galway.
Apologies for not following up with you sooner. I was able to do a little research. Hope some of it is helpful to you in your search for descendants.
See the link below to townlands.ie, which is very helpful to find out information on all townlands in Ireland. Below find the townland with where Patrick Kelly and his family lived
I found Patrick Thomas O Grady son of Martin O Grady and Delia Kelly in Dublin in 1901 with uncle Thomas and his family
I researched family members still alive in the 1911 censuses.
Widow of John Kelly, Nora Kelly http://www.census.nationalarchives.ie/pages/1911/Galway/Hillsbrook/Knock...
Annie Kelly grandaughter to Mary Anne Kelly in 1901 http://www.census.nationalarchives.ie/pages/1911/Galway/Tuam_Urban__part...
Thomas Kelly widow Elizabeth and family in Dublin in 1911 http://www.census.nationalarchives.ie/pages/1911/Dublin/Rotunda/Sherrard...
You might get somewhere with Thomas and Elizabeth's family regarding finding descendants
A useful website to find marriage and death certificates and free is:
If you wish to contact me for help and guidance, I would be only delighted to help.
My email is firstname.lastname@example.org
Best of luck