Several of the previous post have shown the chronology of the JONES surname as it appears in the English legal records. Starting in the south, the surname appears in a gradual pattern of spread from the "border" counties to the western coastal counties. The following figure shows a map of the total number of JONES surnames appearing over the period 1500-1700 for the counties of Wales. This demonstrates the total number of those with the JONES surname that were involved in the English legal records.
Montgomery comes in a distant second, with the Montgomery family (Roger de Montgomery), perhaps finding things a little more difficult in the north. His son, Robert of Belesme, probably helped things by trying to set up his own kingdom which Henry I frustrated. It would seem that Denbigh and Shropeshire produced a similar number of legal cases. [#44...#41...#40]
Those counties surrounding Monmouth are pretty close to the same number of JONES with Glamorgan (#34), Hereford (#33), Carmarthen (#30), and Brecon (#29).
The western most counties show a distant third, with Angelesey showing the fewest.(#5). Mereioneth (#16), Cardigan (#12), and Caernarvon (#8) sharing the same with Pembroke (#8) is shown.
Interesting, that Chester, the northern most border county only shows #5. I suspect this has to do with the fact that Chester had already established the English legal system here since Hugh d'Avranches had his go at it. [One of his nicknames was "the Wolf" given for his ferocity against the Welsh.]
At any rate, the total number of those recorded with the JONES surname 1500-1700 is shown.