Hi Barbara,
Confusing! yes, but I will explain.
County Tipperary was split into two Ridings in the 1800's, North and South.
If you get a map and look for Thurles, above Thurles was North and below was South.
There were two County Towns, Nenagh in the North and Clonmel in the South.
Since, I think about 2012c they are all one now, Nenagh is the county Town (I was born there)
In Griffiths Valuation, Tipperary South Riding, you need to know the Parish, so St.Marty's Clonmel.
This link below shows 4 Michael Ryan's in Clonmel and their Landlord. This is in 1850.
This first one shows Walter Keating as the his landlord. Copy the whole of the link into seach/google if the link doesn't open.
http://www.askaboutireland.ie/griffith-valuation/index.xml?action=doNam…
In Rootsireland it usually states the address, if not have you got the date and month of James and Maria please.
Otherwise it's one of the 4 in the above link.
In some records it shows (TIPP) this is for Tipperary Town in County Tipperary.
This site below does have the records but some are hard to read. Rootsireland got their records from here. If the inputter couldn't read the page then they left it.
Look at the map for Tipperary and you will see St Mary's Clonmel and you will see how it goes over into County waterford.
https://registers.nli.ie/
In the Census records.....
The DED is the District Electorial Division.
When you search just use the names you are to search, and then add other info reducing the results, if you put everything in you would have to be a walking book to know every DED Parish etc. and some DED's overlap Parishes and townlands..
Earlier records are the Tithe records see the link below, when you search as this is key sensitive put names in like mic* as it may be michael, michal or michl
You can do this with a * on any site if it works or % or " a name " it just depends on how it's been input.
If you know of any marriages to the names you listed and deaths there are other sites to search, all free, but I don't want to overload you!
I hope this explains,
Margot