Hi, after a bit of cogitation, and the Forum's help, I think the name in the original posting is Jevan.
I am attaching a couple of similar records as posted on the Library of Wales Wills Web site
Any comments will be gratefully received!
Llanfi
J, U were not distinguished from I, V in Europe until late Medieval, and were not regard as different letters as late as 18th Century in English
https://linguistics.stackexchange.com/questions/38393/why-are-j-u-w-considered-part-of-the-basic-latin-alphabetJ, U, W are included in ISO basic Latin alphabet which consists of 26 letters. However,
The classic Latin has only 23 letters, and J was only used as a variant of I as σ do to ς.
J, U were not distinguished from I, V in Europe until late Medieval, and were not regard as different letters as late as 18th Century in English.
Many Europe languages do not have a J or V(sometimes U instead) in their alphabet.
W, first the digraph UU or VV then ligature as implied in its name, and not included in many European language alphabets, was included in ISO basic Latin alphabet.
Meanwhile, Æ and Œ which are also common no only even in English but also in Medieval Latin and other Europe languages, however, didn't survive in the ISO basic Latin alphabet.
Ch, a digraph dated back to 2 Century BC, was included in Gerke's version of Morse code and came to standard by ITU (as do Ä, Ö, Ü), didn't survive, too.
Why were J, U, W included? Is it just a coincidence that English is the only major language that used all these letters and no more in its orthography?