Ann Knotsworth was born about 1500, Yorkshire, England.
She is named as the daughter of Philip Knotsworth of Market Rasen, Lincolnshire, in Foster's Yorkshire pedigrees, describing her daughter Ann who married Ralph Westby: "... daughter of Hugh Wyrrall of Loversall, co. York. Esq. chief magistrate of Doncaster, 1545/8, living 1549-88, by Ann, his wife, daughter and heiress of Philip Knotsworth, of Market Rasen, co. Lincoln".[1]
Note: I cannot find reliable support for either name or family. Best I found is off by a couple generations (and no indication it's the same family):
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Ann is 24 degrees from Emeril Lagasse, 20 degrees from Nigella Lawson, 22 degrees from Maggie Beer, 41 degrees from Mary Hunnings, 31 degrees from Joop Braakhekke, 33 degrees from Michael Chow, 23 degrees from Ree Drummond, 25 degrees from Paul Hollywood, 23 degrees from Matty Matheson, 24 degrees from Martha Stewart, 33 degrees from Danny Trejo and 29 degrees from Molly Yeh on our single family tree. Login to find your connection.
K > Knotsworth | W > Wyrall > Ann (Knotsworth) Wyrall
Still leaning toward Knotsforth.
In the case of this pair, I think I'd trust FabPedigree over the Rootsweb tree I found, even though FabPedigree doesn't include a source for father being Philip Knotsforth.