Genealogics: Sir David 'Gam' (accessed 21 May 2023), citing Bartrum's Bleddyn ap...

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Genealogics: Sir David 'Gam' (accessed 21 May 2023), citing Bartrum's Bleddyn ap Maenrych 20 and several reliable sources: Complete Peerage, 10:400; Oxford Dictionary of National Biography; and Dictionary of Welsh Biography. Note that Bartrum has just a death year (1415) for Dafydd Gam, citing DWB.

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