Until last year, I was a professional genealogist/historian who, due to lack of income, had to revert to a better-paid profession. I spent several months researching the Vize family of Tipperary (my partner's ancestors). I found many property deed memorials from 1708 (viz: copies of the actual deed transactions) in the Irish Registry of Deeds, most of them relating to this family's land in Co Tipperary and properties in Limerick city and Co Clare. I also have a list of Vize and Vyse (surviving) wills and will indexes (original wills unfortunately destroyed in 1922) held in The National Archives, Dublin.
The male forenames in my partner's ancestral Vize family appear always to have been Joseph, John and William. I have hardcopy evidence of a Joseph Vize (my partner's great-grandfather) who was born in Clonmel,Co Tipperary in 1837 (ref: Census of Ireland (Dublin) 1901). This Joseph's older brothers, William and John (born 1826 & 1827) were members of the Royal Irish Constabulary and remained in Ireland. However, it's very likely that they had brothers, uncles and cousins who emigrated to America, Australia, England and Scotland before the Great Famine of 1847.
It would be interesting to get a response to this message -hopefully with some further clues and connections - as I am now unable to carry out full-time research in Irish archives due to being employed in another area.
I have come across a reference to a Benjamin Vize in Co Tipperary who witnesed a will circa 1719 (ref: Abstracts of Irish Wills in the Registry of Deeds, ed. Philimore). He would have been living there in the late 1600s and may or may not have been related to a John Vize (merchant) of Dublin c 1620.