There is a monumental inscription for Jeptha Willy at Kingsbury Episcopi and also for Hannah his wife. It indicates that Jeptha died in 1812 (burial register says 22 Jan 1812), “aged 76” and Hanna in 1801. Source: Medlycott’s book at Yeovil Library. If he was 76 he would have been born in about 1735. There is a copy of the inscription in the Gallery of my Ancestry tree (“Jeptha Willy butcher (Somerset)”). [We should perhaps consider that the age at death was misread by Meddlycott and really was 56; that would fit better with his wife’s age and the 1783 date of their marriage.]
A descendant of Jeptha’s tested at YSEQ in 2018 (this descendant was the man who started this thread) and was found NOT to have the YDNA snp mutations called I-FGC10448 and I-FGC10444. I-FGC10448 is the most recent YDNA mutation carried by various Willey families (several of which have paper trails back to Drayton Parish in Somerset) and I-FGC1044 is the mutation carried by Willy families in Canada, Australia and the United States with paper trails back to the Middle Lambrook area of Kingsbury Episcopi. The YSEQ testing means that the Jeptha Willy line is NOT the same line as that of the Drayton or Middle Lambrook people. [To confirm this conclusion, it is important to find another Jeptha Willy male descendant to take the YSEQ test.]
The line of the Willy family found in East Lambrook, Kingsbury Episcopi, has to my knowledge NOT taken any YDNA tests. One of the persons in this line was the gentleman Thomas Willy who died in 1797. This Thomas is often confused with yeoman Thomas Willy who died in Middle Lambrook in 1800.