I agree it looks very like 14th or 15th century writing, but think it says "Jacobi nunc Regis" pretty clearly in line 4, and suggest that it may be a scrap of some government document, as they did tend to retain handwriting styles over long periods.
I also agree with Slam that it looks like "Johanna" and wonder if the first line reads
? Johanna Fillere ? vid[ua] executrix test[amen]ti & vltime voluntatis Roberti Fillere defuncti
and the second line begins
? in com[itatum] Bedf[ordensem] husbandman ...
If one accepts these ideas for a moment, then it opens the possibility that the parties named might be related to these I found through the LDS site Family Search:
ROBERT FYLLER
Christened 26 Dec 1600, Maulden, Bedford, England
and
ROB FYLLER
Married 2 Oct 1600 to JOAN ARNOLD, Maulden, Bedford, England.
Both are stated to be extracted records
Only a speculation, of course, I expect someone can shoot it down

Roger