Title: Complete Peerage of England Scotland Ireland Great Britain and the United Kingdom, by G. E Cokayne, Sutton Publishing Ltd, 2000
Note: Complete Peerage gives no ancestry for Joan. I found this ancestry on World Connect. The ancestry doesn't give much details on dates (obviously "estimated") and places, other than Charwelton and Middleton in Northamptonshire. There is a Middleton Cheney in Northampton (as well as a Middleton). I wonder if this family has something to do with the Cheneys, as some people imply by the alternate name for Joan.
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