hi helen...hope you get this reply 20 months after your question...i have also linked my family to william deighton who married margaret allinson...there great grandchild martha deighton 1783-1879 married john turnbull..there daughter isabell ann turnbull married thomas stonehouse who is my 2nd great grandfather...so your william born 1686 [gainford]is my 6th great grandfather...i can not answer your question about the deighton to de dyghton link but i hope it is correct as i have linked an earlier sir henry de dyghton 9 generations earlier who maried eva le scrope...she is directly descended from william the conquerer...making him my 26th great grandfather along with you and i am sure millions more...let me know if you have progressed any further and if this info is of help to you...merry xmas and a happy new year to you all...also william the conquerer is the 26th great grandfather to our queen so shall we meet at next years royal garden party i'm sure we'll get free tickets from cousin elizabeth...cheers...jed