I don't know if this will help or hinder.
Edward Vaughan was not a property owner in the 1876 landowner list. www.failteromhat.com
if he was renting he would be listed.
You can access the Deeds Registry in Dublin but I think its just an in person visit, you could visit their website and find out.
Registry of Deeds-Ireland, just google and looks for 'rootsweb'
Edward Vaughan is NOT in the 1901 census www.census.nationalarchives.ie
There is no name spelled Vaughan in the Tithe Applotments
1820-1839. Which I find unusual as by the time of Griffith Valuation 1846-1864 there are 455 Vaughan's.
Cork Valuation 1852 and there are 3 Timothy Vaughn's.www.askaboutireland.ie
Timothy Vaughan, Parish of Clonfert, Townland Rossacon
Timothy Vaughan, Parish of Fermoy, Townland Fermoy
Timothy Vaughan, Parish of Kilmeen, Townland Toordenduff
1841 UK Census:
Timothy Vaughan, born Ireland, 25, Manchester
Timothy Vaughan, born Ireland, 35 St. James Parish, London
Catalonia May 16, 1890 Queenstown Cork to Boston, agricultural worker, Irish (no age)www.censusfinder.com
not just censuswww.igp-web.com
+ Cork look for gravestone inscriptions
1/2 of Cork County has birth, marriage and death records, this 1/2 is called the North East. Mallow. Would not include Cork City.