thanks Shane,
you've been working very hard!
The 1851 reference, I found from a list (transcribed from a transcribed list? I think) of heads of households in 1851. When you mention an extract, does that mean there might be more info available?
The irishgenealogy.ie site doesn't seem to have anything like enough records to cover all these Richards, so I thought maybe I was missing the nearest church?!
My GGgrandmother married in 1864, giving the bride's address as 141 North King Street, but unfortunately in a registry office so no extra details than on the cert. She and her husband then seem to have moved several times in the first few years of their marriage but on irishgenealogy.ie, I found another Keegan marrying from the address where they were then living. As it was an RC marriage, it gave a mother's name too but stated that both had died so after failing to find the father, I searched for the mother and found a family grave with burials in 1852, 1854 (the mother), 1862, 1864 & 1866. The 1862 & 1864 burials both gave the address as 141 North King Street. The two earlier ones were the same street but no number given. This would seem to indicate that they didn't move far over a period of more than 10 years, especially as there was a Richard on the 1851 list of heads of households there.
The confusing thing is that I have three Richards in the same grave as the mother but none born early enough to be the father of my GGgrandmother. One could be a brother but the other two were born quite a bit later so more likely to be nephews, indicating that my GGgrandmother had (other) brothers too.
I'm also having great difficulty finding civil records to match the deaths of the 1864 and 1866 burials, although I hope that I have now got the reference for the birth of the 1866 baby.
thanks again,
Sheila
PS just a suggestion but the pages preceding the street listing in 1834 look extremely useful too!