Can you help define Margaret (Cockney) Filley?

Question

As it stands now, Margaret (Cockney) Filley is both a potential PGM and Magna Carta project profile.  However she is poorly sourced and needs lots of work.  Can you help?

Thank you.

Comments

Michael - I doubt she'll pan out for Magna Carta Project. For profiles not documented in Douglas Richardson's Magna Carta Ancestry or Royal Ancestry, you'd need clear primary proof for each parent/child relationship until you reach someone documented in those works. Looking at her profile, there is no support that she's daughter of Thomas Cockayne (and Stephen Heathcote's comment on Thomas's profile notes that "Dugdale's Visitations of Derbyshire do not mention a daughter Margaret.").

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Thank you! Yes, I believe you are correct.  I haven’t had a lot of time these days to focus on the sources. I was just asking for help from those that know these sources is better than me.