From Latin and Norman French, English was first written in the legal records of Ireland in the city of Waterford, 1365. [Kilkenney 1434, Dublin 1450's, and Galway 1485 ] From this English language, the Jones surname appears.
The figure below shows the counties in Ireland that had recorded a Jones family with a coat of arms before 1840. These arms were recorded in Burke, 1884 edition, pp.548 - 549.
This research is from my own documents [RN # 23, RN # 88]. There is much to be learned regarding the Irish Jones families. Any Irish JONES families out there? Please post...:-).
For an outline of this research see tgjresearchnotebooks.blogspot.com.