I assume you have this death record:
Name:UsherTinklerDate of Death:11-May-1882
Age:75Parish / District:RATHANGANAddress:RathanganCounty:Co. KildareStatus:
Denomination:Church Of IrelandOccupation:
Did you try Rathangan Old Cemetery?
There are 7 Smiths & 1 McKenna in the Irish phone book (www.118.ie/) in Kildare - might be worth dropping them a line of you don't get any of them replying to your post