I think Fissant is Elizabeth's Gauden's sister, and Denis Gauden's sister in law. (Though they wouldn't have made that distinction as often as we may now do.)
I think her name was Abigail, and her married name was Pheasant/Pheasaunt.. I've seen it spelled different ways.
She is not the same sister of Denis Gauden referred to earlier... that is his late brother's wife, Elizabeth Gauden. (Her husband was Dr. John Gauden.)
What I can't figure out is if Abigail Pheasant lived at Hutton Hall, Essex, or if it was the bishop's widow who lived there. I believe it was probably Abigail Pheasant. But not being in England there's only so much I can track down by the Internet!
Chart showing the number of references in each month of the diary’s entries.