Hi Matt, this is a bit confusing because in the first line of the second para you have put William Ovenden brother in law and William Ovenden father in law as well as the will writer being William Ovenden too.
Later on I think you sort of correct yourself by looking for brother and father of Mary Ashdown but think you need to modify your original post to show brother in law and father in law both as William Ashdown rather than William Ovenden.
Pheno
Hiya
Sorry I think it's because there are lots of Williams involved, William Ovenden (the testator) and the two William Ashdowns named in the Will.
I'm attaching images with this post so you can see what it says. In the first two images the testator [William Ovenden] states:
"All the residue of my goods Cattell Chattell & Personal Estate whatsoever I give and bequeath unto my Brother John Ovenden and my Brother in Law William Ashdown"
Further on in this second extract he states "I do hereby make nominate and appoint the said John Ovenden & William Ashdown joint Executors of this my Last Will and Testament"
So he is clearly stating that he has a brother in law named William Ashdown, who presumably is the brother of Mary Ashdown.
In the third extract [taken from the end of the second page] William Ovenden [the testator] states:
"I do hereby make and appoint my uncle Joseph Moon My father in Law William Ashdown and my cousin James Ovenden overseers of this my Last Will and Testament"
I know William Ovenden was married to Mary Ashdown and the details in this Will suggest that Mary Ashdown was the daughter of a William Ashdown, and that she also had a brother named William Ashdown.
The problem is that I can't find any sign of a christening for a Mary Ashdown who was the daughter of a William Ashdown. There is a William Ashdown christened in Rotherfield in 1666 who is the son of William and Mary Ashdown, however I can't find an Elizabeth. The only christening for an Elizabeth AshdownI have found is in Easebourne in 1662, but that's 60miles away so I don't think that is my Elizabeth.
Hope that helps a bit.
Matt