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Hello. I live in the USA and could really use your help.  This is as far back as I could get with my Kennedy family line (listed below).  From my Grandfather (born in 1904)  going all the way back thru the generations, they all were born, lived and died in Newcastle Upon Tyne; that is until Robert. Other than Robert's parents names of John and Jane Kennedy, I can't find anything to find the CORRECT John and Jane Kennedy.  (I found MANY John & Jane Kennedy's but don't know WHICH ones --if any-- they could be.) Also, other than Robert being born, getting married, fathering William Dixon Kennedy, and dying I can't find anything else on him either. 

I would greatly appreciate help on this. 
AND...
~Did John & Jane have other kids?
~Did Robert & Harriet have other kids?

Thank you so much. Rhonda Kennedy   

~GRT-GRT-GRT-GRT-Grandparents:
Robert Kennedy
B: 1786 in Glanton, Northumberland, England
M: 1814 to Harriett Dixon in Kingston Upon Hull, York, England
D: 1849 in Glendale, Northumberland, England

Children:
    WILLIAM DIXON Kennedy 1824 – 1871

~GRT-GRT-GRT-GRT-GRT-Grandparents:
John & Jane Kennedy... NO OTHER INFORMATION.