Thank you for the welcome, KG and for the other info.
John Bodkin of Castletown (my paternal x6 grandfather) left a big estate to his two sons, John Dominick and Dominick George. JD seems to have received a considerably larger portion as his first son). Dominick George, born around 1770, was in the army for a while and from 1810 to 1824 is listed in various almanacs as resident at variously South Lodge or Louth Lodge - the initial notes for these almanacs would have been taken by hand, so it is likely in the printing process the 'L' became and 'S' in a couple of cases.
Dominick George died in 1824 and after that, I cannot find much trace of Louth Lodge. I notice in the area there is a Lought Lodge...which is further along the Clonbern Road. Perhaps this has also morphed over the years.
Dominic George's three children Elizabeth, Mary and Thomas James (b.1801) inherited what was left of his estate (which was heavily indebted, sold off by 1830). The two girls took sizeabe dowries while Thomas James retained around 350 acres in the Castletown/Tullyinadaly area. Thomas James married a Jane Keaveny and they had 15 children most of whom emigrated, two daughters marrying locally and one of them, Mary Catherine, marrying my great-great grandfather, Nicholas Mahon.
The other daughter, by the way, married a local businessman, Mr. Costello and one of their children Dr. Thomas Bodkin Costello was the doctor to the Tuam Babies Home throughout the terrible years we have recently learnt about.
None of Thomas James' children were interested in returning from their exciting lives in the US and Australia, so the remaining 350 acres were sold shortly after Thomas James' death in 1881.
One of Thomas James' sons was Dominic Fursey Bodkin, a leading Christian Brother in Australia:
https://en.wikipedia.org/wiki/Dominic_Fursey_BodkinAnother intersting side note is that these Bodkins were closely related to the infamous Bodkin Murders of 1741: John Bodkin of Castletown, the founder of the dynasty, married Mary Catherine Bodkin, the daughter of the sole survivor of the Bodkin Murders:
http://places.galwaylibrary.ie/history/chapter77.html