Maggiemaybe, why would I call you a little Englander ? You asked a question not posted an insult or mocked .
There isn't a clear explanation of the use of J.K. V in Welsh names when these letters are not in the Welsh alphabet . Firstly the fact that people couldn't read or write , then the patronymic system which parts of Wales clung to long after England wanted it stop.
It was not unusual for people to name their son after a saint , example John , this would have been Ieuan but at the baptism the priest entered John in the register
V. The patron Saint is David and this would have been Daffydd really , the v came into use when the patronymic system was brought in , example a son named
Daffydd the son of Ifan would have been called Daffydd ap Ifan , this became David Evans ,as did the Christian name, the second Christian name became a surname , it evolved slowly , I cannot give dates sorry . Ieuan is I think the main reason for Evans
If you were ever to research your Welsh family I am quite sure you will find Ieuan or Ifan.
If you ever want help with finding some info on your grandfather do contact me by pm, I never, ever , disclose who I research for , I have done people's trees for years and never repeated a thing, each person I researched I consider a loved family member and honour this