I come to this chat very late but can share some information about Luke Kelly from his time in Ceylon
Luke attended Medical School at Trinity College Dublin and spent time studying in Edinburgh, He apprenticed with his father Edmund for five years
Luke married his second wife Mary Emily Shuttleworth in St Marys Marylebone London on 9th July 1832, they had six children namely :
Louisa Lillee born 17/1/1835
Frederick William born 11/1/36
Luke Frederick born 1838 died Matale 25/11/1888
Emily Maria Campbell, died at Perak
Henrietta Maria born 1/6/1841
Lillee Henry Richard born 15/10/1842
Luke died in Colombo 11/10/1842 four days before the birth of his youngest son and was buried in Galle Face burial ground, Colombo
Lukes second wife had six children under seven years of age when Luke died, she remarried Lt Alfred John Douglas Smith who was friends with Luke in the Army, the six children kept their Kelly surname
Lillee Kelly, Lukes youngest son was my great grandfather. He started growing Coffee at an Estate in Dickoya, retired to England as a JP then back to Ceylon when the coffee was wiped out to replant with Tea. He also planted a Tea Estate that he called Killarney in Bogawantalawa. I speculate that there is some connection with the Kelly family and Killarney, co Kerry, but I have not been able to track this down.
Most of the Castlereagh Estate was flooded in the 1960s to form a reservoir but the Killarney Estate still exists and Douglas Kelly lived there all his life until he died there in 1967, the last of the Kellys in Ceylon